diff --git a/.gitattributes b/.gitattributes
index 14c3c359..0a9dafc4 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,4 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/phpunit-9.6.xml.dist export-ignore
 /.git* export-ignore
diff --git a/Attribute/DnsSensitive.php b/Attribute/DnsSensitive.php
new file mode 100644
index 00000000..4c80ec5e
--- /dev/null
+++ b/Attribute/DnsSensitive.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Attribute;
+
+#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
+final class DnsSensitive
+{
+    public function __construct(
+        public readonly ?string $class = null,
+    ) {
+    }
+}
diff --git a/Attribute/TimeSensitive.php b/Attribute/TimeSensitive.php
new file mode 100644
index 00000000..da9e816a
--- /dev/null
+++ b/Attribute/TimeSensitive.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Attribute;
+
+#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
+final class TimeSensitive
+{
+    public function __construct(
+        public readonly ?string $class = null,
+    ) {
+    }
+}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8be6586..579fd88a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,24 @@
 CHANGELOG
 =========
 
+7.4
+---
+
+ * Add support for mocking the `strtotime()` function
+
+7.3
+---
+
+ * Enable configuring clock and DNS mock namespaces with attributes
+ * Add support for CAA record type in DnsMock for improved DNS mocking capabilities
+
+7.2
+---
+
+ * Add a PHPUnit extension that registers the clock mock and DNS mock and the `DebugClassLoader` from the ErrorHandler component if present
+ * Add `ExpectUserDeprecationMessageTrait` with a polyfill of PHPUnit's `expectUserDeprecationMessage()`
+ * Use `total` for asserting deprecation count when a group is not defined
+
 6.4
 ---
 
diff --git a/ClassExistsMock.php b/ClassExistsMock.php
index bbf9b76a..61582425 100644
--- a/ClassExistsMock.php
+++ b/ClassExistsMock.php
@@ -24,10 +24,8 @@ class ClassExistsMock
      * Configures the classes to be checked upon existence.
      *
      * @param array $classes Mocked class names as keys (case-sensitive, without leading root namespace slash) and booleans as values
-     *
-     * @return void
      */
-    public static function withMockedClasses(array $classes)
+    public static function withMockedClasses(array $classes): void
     {
         self::$classes = $classes;
     }
@@ -36,59 +34,42 @@ public static function withMockedClasses(array $classes)
      * Configures the enums to be checked upon existence.
      *
      * @param array $enums Mocked enums names as keys (case-sensitive, without leading root namespace slash) and booleans as values
-     *
-     * @return void
      */
-    public static function withMockedEnums(array $enums)
+    public static function withMockedEnums(array $enums): void
     {
         self::$enums = $enums;
         self::$classes += $enums;
     }
 
-    /**
-     * @return bool
-     */
-    public static function class_exists($name, $autoload = true)
+    public static function class_exists($name, $autoload = true): bool
     {
         $name = ltrim($name, '\\');
 
         return isset(self::$classes[$name]) ? (bool) self::$classes[$name] : \class_exists($name, $autoload);
     }
 
-    /**
-     * @return bool
-     */
-    public static function interface_exists($name, $autoload = true)
+    public static function interface_exists($name, $autoload = true): bool
     {
         $name = ltrim($name, '\\');
 
         return isset(self::$classes[$name]) ? (bool) self::$classes[$name] : \interface_exists($name, $autoload);
     }
 
-    /**
-     * @return bool
-     */
-    public static function trait_exists($name, $autoload = true)
+    public static function trait_exists($name, $autoload = true): bool
     {
         $name = ltrim($name, '\\');
 
         return isset(self::$classes[$name]) ? (bool) self::$classes[$name] : \trait_exists($name, $autoload);
     }
 
-    /**
-     * @return bool
-     */
-    public static function enum_exists($name, $autoload = true)
+    public static function enum_exists($name, $autoload = true): bool
     {
         $name = ltrim($name, '\\');
 
         return isset(self::$enums[$name]) ? (bool) self::$enums[$name] : \enum_exists($name, $autoload);
     }
 
-    /**
-     * @return void
-     */
-    public static function register($class)
+    public static function register($class): void
     {
         $self = static::class;
 
@@ -96,7 +77,7 @@ public static function register($class)
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
-        } elseif (0 === strpos($class, 'Tests\\')) {
+        } elseif (str_starts_with($class, 'Tests\\')) {
             $mockedNs[] = substr($class, 6, strrpos($class, '\\') - 6);
         }
         foreach ($mockedNs as $ns) {
diff --git a/ClockMock.php b/ClockMock.php
index 64a7ac8f..9a9c910e 100644
--- a/ClockMock.php
+++ b/ClockMock.php
@@ -19,10 +19,7 @@ class ClockMock
 {
     private static $now;
 
-    /**
-     * @return bool|null
-     */
-    public static function withClockMock($enable = null)
+    public static function withClockMock($enable = null): ?bool
     {
         if (null === $enable) {
             return null !== self::$now;
@@ -33,10 +30,7 @@ public static function withClockMock($enable = null)
         return null;
     }
 
-    /**
-     * @return int
-     */
-    public static function time()
+    public static function time(): int
     {
         if (null === self::$now) {
             return \time();
@@ -45,10 +39,7 @@ public static function time()
         return (int) self::$now;
     }
 
-    /**
-     * @return int
-     */
-    public static function sleep($s)
+    public static function sleep($s): int
     {
         if (null === self::$now) {
             return \sleep($s);
@@ -59,10 +50,7 @@ public static function sleep($s)
         return 0;
     }
 
-    /**
-     * @return void
-     */
-    public static function usleep($us)
+    public static function usleep($us): void
     {
         if (null === self::$now) {
             \usleep($us);
@@ -71,6 +59,9 @@ public static function usleep($us)
         }
     }
 
+    /**
+     * @return string|float
+     */
     public static function microtime($asFloat = false)
     {
         if (null === self::$now) {
@@ -81,13 +72,10 @@ public static function microtime($asFloat = false)
             return self::$now;
         }
 
-        return sprintf('%0.6f00 %d', self::$now - (int) self::$now, (int) self::$now);
+        return \sprintf('%0.6f00 %d', self::$now - (int) self::$now, (int) self::$now);
     }
 
-    /**
-     * @return string
-     */
-    public static function date($format, $timestamp = null)
+    public static function date($format, $timestamp = null): string
     {
         if (null === $timestamp) {
             $timestamp = self::time();
@@ -96,10 +84,7 @@ public static function date($format, $timestamp = null)
         return \date($format, $timestamp);
     }
 
-    /**
-     * @return string
-     */
-    public static function gmdate($format, $timestamp = null)
+    public static function gmdate($format, $timestamp = null): string
     {
         if (null === $timestamp) {
             $timestamp = self::time();
@@ -116,7 +101,7 @@ public static function hrtime($asNumber = false)
         $ns = (self::$now - (int) self::$now) * 1000000000;
 
         if ($asNumber) {
-            $number = sprintf('%d%d', (int) self::$now, $ns);
+            $number = \sprintf('%d%d', (int) self::$now, $ns);
 
             return \PHP_INT_SIZE === 8 ? (int) $number : (float) $number;
         }
@@ -125,9 +110,18 @@ public static function hrtime($asNumber = false)
     }
 
     /**
-     * @return void
+     * @return false|int
      */
-    public static function register($class)
+    public static function strtotime(string $datetime, ?int $timestamp = null)
+    {
+        if (null === $timestamp) {
+            $timestamp = self::time();
+        }
+
+        return \strtotime($datetime, $timestamp);
+    }
+
+    public static function register($class): void
     {
         $self = static::class;
 
@@ -135,7 +129,7 @@ public static function register($class)
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
-        } elseif (0 === strpos($class, 'Tests\\')) {
+        } elseif (str_starts_with($class, 'Tests\\')) {
             $mockedNs[] = substr($class, 6, strrpos($class, '\\') - 6);
         }
         foreach ($mockedNs as $ns) {
@@ -179,6 +173,11 @@ function hrtime(\$asNumber = false)
 {
     return \\$self::hrtime(\$asNumber);
 }
+
+function strtotime(\$datetime, \$timestamp = null)
+{
+    return \\$self::strtotime(\$datetime, \$timestamp);
+}
 EOPHP
             );
         }
diff --git a/ConstraintTrait.php b/ConstraintTrait.php
index ceb60418..9090cc4c 100644
--- a/ConstraintTrait.php
+++ b/ConstraintTrait.php
@@ -14,12 +14,7 @@
 use PHPUnit\Framework\Constraint\Constraint;
 
 $r = new \ReflectionClass(Constraint::class);
-if ($r->getProperty('exporter')->isProtected()) {
-    trait ConstraintTrait
-    {
-        use Legacy\ConstraintTraitForV7;
-    }
-} elseif (!$r->getMethod('evaluate')->hasReturnType()) {
+if (!$r->getMethod('evaluate')->hasReturnType()) {
     trait ConstraintTrait
     {
         use Legacy\ConstraintTraitForV8;
diff --git a/CoverageListener.php b/CoverageListener.php
index f1a89ff8..c3fa8ec5 100644
--- a/CoverageListener.php
+++ b/CoverageListener.php
@@ -29,7 +29,7 @@ class CoverageListener implements TestListener
     public function __construct(?callable $sutFqcnResolver = null, bool $warningOnSutNotFound = false)
     {
         $this->sutFqcnResolver = $sutFqcnResolver ?? static function (Test $test): ?string {
-            $class = \get_class($test);
+            $class = $test::class;
 
             $sutFqcn = str_replace('\\Tests\\', '\\', $class);
             $sutFqcn = preg_replace('{Test$}', '', $sutFqcn);
@@ -46,7 +46,7 @@ public function startTest(Test $test): void
             return;
         }
 
-        $annotations = TestUtil::parseTestMethodAnnotations(\get_class($test), $test->getName(false));
+        $annotations = TestUtil::parseTestMethodAnnotations($test::class, $test->getName(false));
 
         $ignoredAnnotations = ['covers', 'coversDefaultClass', 'coversNothing'];
 
@@ -86,13 +86,10 @@ public function startTest(Test $test): void
     private function addCoversForClassToAnnotationCache(Test $test, array $covers): void
     {
         $r = new \ReflectionProperty(TestUtil::class, 'annotationCache');
-        if (\PHP_VERSION_ID < 80100) {
-            $r->setAccessible(true);
-        }
 
         $cache = $r->getValue();
         $cache = array_replace_recursive($cache, [
-            \get_class($test) => [
+            $test::class => [
                 'covers' => $covers,
             ],
         ]);
@@ -102,12 +99,9 @@ private function addCoversForClassToAnnotationCache(Test $test, array $covers):
 
     private function addCoversForDocBlockInsideRegistry(Test $test, array $covers): void
     {
-        $docBlock = Registry::getInstance()->forClassName(\get_class($test));
+        $docBlock = Registry::getInstance()->forClassName($test::class);
 
         $symbolAnnotations = new \ReflectionProperty($docBlock, 'symbolAnnotations');
-        if (\PHP_VERSION_ID < 80100) {
-            $symbolAnnotations->setAccessible(true);
-        }
 
         // Exclude internal classes; PHPUnit 9.1+ is picky about tests covering, say, a \RuntimeException
         $covers = array_filter($covers, function (string $class) {
diff --git a/DeprecationErrorHandler.php b/DeprecationErrorHandler.php
index 8b78ca71..b53d90e8 100644
--- a/DeprecationErrorHandler.php
+++ b/DeprecationErrorHandler.php
@@ -97,7 +97,7 @@ public static function collectDeprecations($outputFile)
     {
         $deprecations = [];
         $previousErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$deprecations, &$previousErrorHandler) {
-            if (\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type && (\E_WARNING !== $type || false === strpos($msg, '" targeting switch is equivalent to "break'))) {
+            if (\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type && (\E_WARNING !== $type || !str_contains($msg, '" targeting switch is equivalent to "break'))) {
                 if ($previousErrorHandler) {
                     return $previousErrorHandler($type, $msg, $file, $line, $context);
                 }
@@ -129,7 +129,7 @@ public static function collectDeprecations($outputFile)
      */
     public function handleError($type, $msg, $file, $line, $context = [])
     {
-        if ((\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type && (\E_WARNING !== $type || false === strpos($msg, '" targeting switch is equivalent to "break'))) || !$this->getConfiguration()->isEnabled()) {
+        if ((\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type && (\E_WARNING !== $type || !str_contains($msg, '" targeting switch is equivalent to "break'))) || !$this->getConfiguration()->isEnabled()) {
             return \call_user_func(self::getPhpUnitErrorHandler(), $type, $msg, $file, $line, $context);
         }
 
@@ -286,13 +286,7 @@ private function getConfiguration()
         return $this->configuration = Configuration::fromUrlEncodedString((string) $mode);
     }
 
-    /**
-     * @param string $str
-     * @param bool   $red
-     *
-     * @return string
-     */
-    private static function colorize($str, $red)
+    private static function colorize(string $str, bool $red): string
     {
         if (!self::hasColorSupport()) {
             return $str;
@@ -304,12 +298,9 @@ private static function colorize($str, $red)
     }
 
     /**
-     * @param string[]      $groups
-     * @param Configuration $configuration
-     *
-     * @throws \InvalidArgumentException
+     * @param string[] $groups
      */
-    private function displayDeprecations($groups, $configuration)
+    private function displayDeprecations(array $groups, Configuration $configuration): void
     {
         $cmp = function ($a, $b) {
             return $b->count() - $a->count();
@@ -415,10 +406,8 @@ private static function getPhpUnitErrorHandler(): callable
      *
      * Reference: Composer\XdebugHandler\Process::supportsColor
      * https://github.com/composer/xdebug-handler
-     *
-     * @return bool
      */
-    private static function hasColorSupport()
+    private static function hasColorSupport(): bool
     {
         if (!\defined('STDOUT')) {
             return false;
@@ -429,11 +418,18 @@ private static function hasColorSupport()
             return false;
         }
 
-        if (!self::isTty()) {
+        // Follow https://force-color.org/
+        if ('' !== (($_SERVER['FORCE_COLOR'] ?? getenv('FORCE_COLOR'))[0] ?? '')) {
+            return true;
+        }
+
+        // Detect msysgit/mingw and assume this is a tty because detection
+        // does not work correctly, see https://github.com/composer/composer/issues/9690
+        if (!@stream_isatty(\STDOUT) && !\in_array(strtoupper((string) getenv('MSYSTEM')), ['MINGW32', 'MINGW64'], true)) {
             return false;
         }
 
-        if ('\\' === \DIRECTORY_SEPARATOR && \function_exists('sapi_windows_vt100_support') && @sapi_windows_vt100_support(\STDOUT)) {
+        if ('\\' === \DIRECTORY_SEPARATOR && @sapi_windows_vt100_support(\STDOUT)) {
             return true;
         }
 
@@ -452,34 +448,4 @@ private static function hasColorSupport()
         // See https://github.com/chalk/supports-color/blob/d4f413efaf8da045c5ab440ed418ef02dbb28bf1/index.js#L157
         return preg_match('/^((screen|xterm|vt100|vt220|putty|rxvt|ansi|cygwin|linux).*)|(.*-256(color)?(-bce)?)$/', $term);
     }
-
-    /**
-     * Checks if the stream is a TTY, i.e; whether the output stream is connected to a terminal.
-     *
-     * Reference: Composer\Util\Platform::isTty
-     * https://github.com/composer/composer
-     */
-    private static function isTty(): bool
-    {
-        // Detect msysgit/mingw and assume this is a tty because detection
-        // does not work correctly, see https://github.com/composer/composer/issues/9690
-        if (\in_array(strtoupper((string) getenv('MSYSTEM')), ['MINGW32', 'MINGW64'], true)) {
-            return true;
-        }
-
-        // Modern cross-platform function, includes the fstat fallback so if it is present we trust it
-        if (\function_exists('stream_isatty')) {
-            return @stream_isatty(\STDOUT);
-        }
-
-        // Only trusting this if it is positive, otherwise prefer fstat fallback.
-        if (\function_exists('posix_isatty') && @posix_isatty(\STDOUT)) {
-            return true;
-        }
-
-        $stat = @fstat(\STDOUT);
-
-        // Check if formatted mode is S_IFCHR
-        return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
-    }
 }
diff --git a/DeprecationErrorHandler/Configuration.php b/DeprecationErrorHandler/Configuration.php
index 108b6373..c984b73d 100644
--- a/DeprecationErrorHandler/Configuration.php
+++ b/DeprecationErrorHandler/Configuration.php
@@ -70,7 +70,7 @@ class Configuration
      * @param string      $baselineFile     The path to the baseline file
      * @param string|null $logFile          The path to the log file
      */
-    private function __construct(array $thresholds = [], $regex = '', $verboseOutput = [], $ignoreFile = '', $generateBaseline = false, $baselineFile = '', $logFile = null)
+    private function __construct(array $thresholds = [], string $regex = '', array $verboseOutput = [], string $ignoreFile = '', bool $generateBaseline = false, string $baselineFile = '', ?string $logFile = null)
     {
         $groups = ['total', 'indirect', 'direct', 'self'];
 
@@ -96,7 +96,7 @@ private function __construct(array $thresholds = [], $regex = '', $verboseOutput
         }
         foreach ($groups as $group) {
             if (!isset($this->thresholds[$group])) {
-                $this->thresholds[$group] = 999999;
+                $this->thresholds[$group] = $this->thresholds['total'] ?? 999999;
             }
         }
         $this->regex = $regex;
@@ -279,10 +279,7 @@ public function writeBaseline(): void
         file_put_contents($this->baselineFile, json_encode($map, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES));
     }
 
-    /**
-     * @param string $message
-     */
-    public function shouldDisplayStackTrace($message): bool
+    public function shouldDisplayStackTrace(string $message): bool
     {
         return '' !== $this->regex && preg_match($this->regex, $message);
     }
@@ -308,10 +305,9 @@ public function getLogFile(): ?string
     }
 
     /**
-     * @param string $serializedConfiguration an encoded string, for instance
-     *                                        max[total]=1234&max[indirect]=42
+     * @param string $serializedConfiguration An encoded string, for instance max[total]=1234&max[indirect]=42
      */
-    public static function fromUrlEncodedString($serializedConfiguration): self
+    public static function fromUrlEncodedString(string $serializedConfiguration): self
     {
         parse_str($serializedConfiguration, $normalizedConfiguration);
         foreach (array_keys($normalizedConfiguration) as $key) {
diff --git a/DeprecationErrorHandler/Deprecation.php b/DeprecationErrorHandler/Deprecation.php
index 082509fd..caf0b825 100644
--- a/DeprecationErrorHandler/Deprecation.php
+++ b/DeprecationErrorHandler/Deprecation.php
@@ -55,12 +55,7 @@ class Deprecation
 
     private $originalFilesStack;
 
-    /**
-     * @param string $message
-     * @param string $file
-     * @param bool   $languageDeprecation
-     */
-    public function __construct($message, array $trace, $file, $languageDeprecation = false)
+    public function __construct(string $message, array $trace, string $file, bool $languageDeprecation = false)
     {
         if (DebugClassLoader::class === ($trace[2]['class'] ?? '')) {
             $this->triggeringClass = $trace[2]['args'][0];
@@ -104,7 +99,7 @@ public function __construct($message, array $trace, $file, $languageDeprecation
                     $this->getOriginalFilesStack();
                     array_splice($this->originalFilesStack, 0, $j, [$this->triggeringFile]);
 
-                    if (preg_match('/(?|"([^"]++)" that is deprecated|should implement method "(?:static )?([^:]++))/', $message, $m) || (false === strpos($message, '()" will return') && false === strpos($message, 'native return type declaration') && preg_match('/^(?:The|Method) "([^":]++)/', $message, $m))) {
+                    if (preg_match('/(?|"([^"]++)" that is deprecated|should implement method "(?:static )?([^:]++))/', $message, $m) || (!str_contains($message, '()" will return') && !str_contains($message, 'native return type declaration') && preg_match('/^(?:The|Method) "([^":]++)/', $message, $m))) {
                         $this->triggeringFile = (new \ReflectionClass($m[1]))->getFileName();
                         array_unshift($this->originalFilesStack, $this->triggeringFile);
                     }
@@ -142,7 +137,7 @@ public function __construct($message, array $trace, $file, $languageDeprecation
             return;
         }
 
-        if (!isset($line['class'], $trace[$i - 2]['function']) || 0 !== strpos($line['class'], SymfonyTestsListenerFor::class)) {
+        if (!isset($line['class'], $trace[$i - 2]['function']) || !str_starts_with($line['class'], SymfonyTestsListenerFor::class)) {
             $this->originClass = isset($line['object']) ? \get_class($line['object']) : $line['class'];
             $this->originMethod = $line['function'];
 
@@ -152,38 +147,27 @@ public function __construct($message, array $trace, $file, $languageDeprecation
         $test = $line['args'][0] ?? null;
 
         if (($test instanceof TestCase || $test instanceof TestSuite) && ('trigger_error' !== $trace[$i - 2]['function'] || isset($trace[$i - 2]['class']))) {
-            $this->originClass = \get_class($test);
+            $this->originClass = $test::class;
             $this->originMethod = $test->getName();
-
-            return;
         }
     }
 
-    /**
-     * @return bool
-     */
-    private function lineShouldBeSkipped(array $line)
+    private function lineShouldBeSkipped(array $line): bool
     {
         if (!isset($line['class'])) {
             return true;
         }
         $class = $line['class'];
 
-        return 'ReflectionMethod' === $class || 0 === strpos($class, 'PHPUnit\\');
+        return 'ReflectionMethod' === $class || str_starts_with($class, 'PHPUnit\\');
     }
 
-    /**
-     * @return bool
-     */
-    public function originatesFromDebugClassLoader()
+    public function originatesFromDebugClassLoader(): bool
     {
         return isset($this->triggeringClass);
     }
 
-    /**
-     * @return string
-     */
-    public function triggeringClass()
+    public function triggeringClass(): string
     {
         if (null === $this->triggeringClass) {
             throw new \LogicException('Check with originatesFromDebugClassLoader() before calling this method.');
@@ -192,18 +176,12 @@ public function triggeringClass()
         return $this->triggeringClass;
     }
 
-    /**
-     * @return bool
-     */
-    public function originatesFromAnObject()
+    public function originatesFromAnObject(): bool
     {
         return isset($this->originClass);
     }
 
-    /**
-     * @return string
-     */
-    public function originatingClass()
+    public function originatingClass(): string
     {
         if (null === $this->originClass) {
             throw new \LogicException('Check with originatesFromAnObject() before calling this method.');
@@ -211,13 +189,10 @@ public function originatingClass()
 
         $class = $this->originClass;
 
-        return false !== strpos($class, "@anonymous\0") ? (get_parent_class($class) ?: key(class_implements($class)) ?: 'class').'@anonymous' : $class;
+        return str_contains($class, "@anonymous\0") ? (get_parent_class($class) ?: key(class_implements($class)) ?: 'class').'@anonymous' : $class;
     }
 
-    /**
-     * @return string
-     */
-    public function originatingMethod()
+    public function originatingMethod(): string
     {
         if (null === $this->originMethod) {
             throw new \LogicException('Check with originatesFromAnObject() before calling this method.');
@@ -226,18 +201,12 @@ public function originatingMethod()
         return $this->originMethod;
     }
 
-    /**
-     * @return string
-     */
-    public function getMessage()
+    public function getMessage(): string
     {
         return $this->message;
     }
 
-    /**
-     * @return bool
-     */
-    public function isLegacy()
+    public function isLegacy(): bool
     {
         if (!$this->originClass || (new \ReflectionClass($this->originClass))->isInternal()) {
             return false;
@@ -246,35 +215,30 @@ public function isLegacy()
         $method = $this->originatingMethod();
         $groups = class_exists(Groups::class, false) ? [new Groups(), 'groups'] : [Test::class, 'getGroups'];
 
-        return 0 === strpos($method, 'testLegacy')
-            || 0 === strpos($method, 'provideLegacy')
-            || 0 === strpos($method, 'getLegacy')
+        return str_starts_with($method, 'testLegacy')
+            || str_starts_with($method, 'provideLegacy')
+            || str_starts_with($method, 'getLegacy')
             || strpos($this->originClass, '\Legacy')
             || \in_array('legacy', $groups($this->originClass, $method), true);
     }
 
-    /**
-     * @return bool
-     */
-    public function isMuted()
+    public function isMuted(): bool
     {
         if ('Function ReflectionType::__toString() is deprecated' !== $this->message) {
             return false;
         }
         if (isset($this->trace[1]['class'])) {
-            return 0 === strpos($this->trace[1]['class'], 'PHPUnit\\');
+            return str_starts_with($this->trace[1]['class'], 'PHPUnit\\');
         }
 
-        return false !== strpos($this->triggeringFile, \DIRECTORY_SEPARATOR.'vendor'.\DIRECTORY_SEPARATOR.'phpunit'.\DIRECTORY_SEPARATOR);
+        return str_contains($this->triggeringFile, \DIRECTORY_SEPARATOR.'vendor'.\DIRECTORY_SEPARATOR.'phpunit'.\DIRECTORY_SEPARATOR);
     }
 
     /**
      * Tells whether both the calling package and the called package are vendor
      * packages.
-     *
-     * @return string
      */
-    public function getType()
+    public function getType(): string
     {
         $pathType = $this->getPathType($this->triggeringFile);
         if ($this->languageDeprecation && self::PATH_TYPE_VENDOR === $pathType) {
@@ -331,16 +295,12 @@ private function getOriginalFilesStack()
 
     /**
      * getPathType() should always be called prior to calling this method.
-     *
-     * @param string $path
-     *
-     * @return string
      */
-    private function getPackage($path)
+    private function getPackage(string $path): string
     {
         $path = realpath($path) ?: $path;
         foreach (self::getVendors() as $vendorRoot) {
-            if (0 === strpos($path, $vendorRoot)) {
+            if (str_starts_with($path, $vendorRoot)) {
                 $relativePath = substr($path, \strlen($vendorRoot) + 1);
                 $vendor = strstr($relativePath, \DIRECTORY_SEPARATOR, true);
                 if (false === $vendor) {
@@ -357,7 +317,7 @@ private function getPackage($path)
     /**
      * @return string[]
      */
-    private static function getVendors()
+    private static function getVendors(): array
     {
         if (null === self::$vendors) {
             self::$vendors = $paths = [];
@@ -366,7 +326,7 @@ private static function getVendors()
                 self::$vendors[] = \dirname((new \ReflectionClass(DebugClassLoader::class))->getFileName());
             }
             foreach (get_declared_classes() as $class) {
-                if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
+                if ('C' === $class[0] && str_starts_with($class, 'ComposerAutoloaderInit')) {
                     $r = new \ReflectionClass($class);
                     $v = \dirname($r->getFileName(), 2);
                     if (file_exists($v.'/composer/installed.json')) {
@@ -381,7 +341,7 @@ private static function getVendors()
             }
             foreach ($paths as $path) {
                 foreach (self::$vendors as $vendor) {
-                    if (0 !== strpos($path, $vendor)) {
+                    if (!str_starts_with($path, $vendor)) {
                         self::$internalPaths[] = $path;
                     }
                 }
@@ -404,25 +364,20 @@ private static function addSourcePathsFromPrefixes(array $prefixesByNamespace, a
         return $paths;
     }
 
-    /**
-     * @param string $path
-     *
-     * @return string
-     */
-    private function getPathType($path)
+    private function getPathType(string $path): string
     {
         $realPath = realpath($path);
         if (false === $realPath && '-' !== $path && 'Standard input code' !== $path) {
             return self::PATH_TYPE_UNDETERMINED;
         }
         foreach (self::getVendors() as $vendor) {
-            if (0 === strpos($realPath, $vendor) && false !== strpbrk(substr($realPath, \strlen($vendor), 1), '/'.\DIRECTORY_SEPARATOR)) {
+            if (str_starts_with($realPath, $vendor) && false !== strpbrk(substr($realPath, \strlen($vendor), 1), '/'.\DIRECTORY_SEPARATOR)) {
                 return self::PATH_TYPE_VENDOR;
             }
         }
 
         foreach (self::$internalPaths as $internalPath) {
-            if (0 === strpos($realPath, $internalPath)) {
+            if (str_starts_with($realPath, $internalPath)) {
                 return self::PATH_TYPE_SELF;
             }
         }
@@ -430,16 +385,10 @@ private function getPathType($path)
         return self::PATH_TYPE_UNDETERMINED;
     }
 
-    /**
-     * @return string
-     */
-    public function toString()
+    public function toString(): string
     {
         $exception = new \Exception($this->message);
         $reflection = new \ReflectionProperty($exception, 'trace');
-        if (\PHP_VERSION_ID < 80100) {
-            $reflection->setAccessible(true);
-        }
         $reflection->setValue($exception, $this->trace);
 
         return ($this->originatesFromAnObject() ? 'deprecation triggered by '.$this->originatingClass().'::'.$this->originatingMethod().":\n" : '')
diff --git a/DeprecationErrorHandler/DeprecationGroup.php b/DeprecationErrorHandler/DeprecationGroup.php
index 23b95e19..cc4b9c04 100644
--- a/DeprecationErrorHandler/DeprecationGroup.php
+++ b/DeprecationErrorHandler/DeprecationGroup.php
@@ -23,21 +23,13 @@ final class DeprecationGroup
      */
     private $deprecationNotices = [];
 
-    /**
-     * @param string $message
-     * @param string $class
-     * @param string $method
-     */
-    public function addNoticeFromObject($message, $class, $method)
+    public function addNoticeFromObject(string $message, string $class, string $method): void
     {
         $this->deprecationNotice($message)->addObjectOccurrence($class, $method);
         $this->addNotice();
     }
 
-    /**
-     * @param string $message
-     */
-    public function addNoticeFromProceduralCode($message)
+    public function addNoticeFromProceduralCode(string $message): void
     {
         $this->deprecationNotice($message)->addProceduralOccurrence();
         $this->addNotice();
@@ -48,10 +40,7 @@ public function addNotice()
         ++$this->count;
     }
 
-    /**
-     * @param string $message
-     */
-    private function deprecationNotice($message): DeprecationNotice
+    private function deprecationNotice(string $message): DeprecationNotice
     {
         return $this->deprecationNotices[$message] ?? $this->deprecationNotices[$message] = new DeprecationNotice();
     }
diff --git a/DnsMock.php b/DnsMock.php
index f0145e7d..bc2ac1a8 100644
--- a/DnsMock.php
+++ b/DnsMock.php
@@ -30,24 +30,20 @@ class DnsMock
         'NAPTR' => \DNS_NAPTR,
         'TXT' => \DNS_TXT,
         'HINFO' => \DNS_HINFO,
+        'CAA' => '\\' !== \DIRECTORY_SEPARATOR ? \DNS_CAA : 0,
     ];
 
     /**
      * Configures the mock values for DNS queries.
      *
      * @param array $hosts Mocked hosts as keys, arrays of DNS records as returned by dns_get_record() as values
-     *
-     * @return void
      */
-    public static function withMockedHosts(array $hosts)
+    public static function withMockedHosts(array $hosts): void
     {
         self::$hosts = $hosts;
     }
 
-    /**
-     * @return bool
-     */
-    public static function checkdnsrr($hostname, $type = 'MX')
+    public static function checkdnsrr($hostname, $type = 'MX'): bool
     {
         if (!self::$hosts) {
             return \checkdnsrr($hostname, $type);
@@ -68,10 +64,7 @@ public static function checkdnsrr($hostname, $type = 'MX')
         return false;
     }
 
-    /**
-     * @return bool
-     */
-    public static function getmxrr($hostname, &$mxhosts, &$weight = null)
+    public static function getmxrr($hostname, &$mxhosts, &$weight = null): bool
     {
         if (!self::$hosts) {
             return \getmxrr($hostname, $mxhosts, $weight);
@@ -169,10 +162,7 @@ public static function dns_get_record($hostname, $type = \DNS_ANY, &$authns = nu
         return $records;
     }
 
-    /**
-     * @return void
-     */
-    public static function register($class)
+    public static function register($class): void
     {
         $self = static::class;
 
@@ -180,7 +170,7 @@ public static function register($class)
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
-        } elseif (0 === strpos($class, 'Tests\\')) {
+        } elseif (str_starts_with($class, 'Tests\\')) {
             $mockedNs[] = substr($class, 6, strrpos($class, '\\') - 6);
         }
         foreach ($mockedNs as $ns) {
diff --git a/ExpectUserDeprecationMessageTrait.php b/ExpectUserDeprecationMessageTrait.php
new file mode 100644
index 00000000..ed94c84f
--- /dev/null
+++ b/ExpectUserDeprecationMessageTrait.php
@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit;
+
+use PHPUnit\Runner\Version;
+
+if (version_compare(Version::id(), '11.0.0', '<')) {
+    trait ExpectUserDeprecationMessageTrait
+    {
+        use ExpectDeprecationTrait;
+
+        final protected function expectUserDeprecationMessage(string $expectedUserDeprecationMessage): void
+        {
+            $this->expectDeprecation(str_replace('%', '%%', $expectedUserDeprecationMessage));
+        }
+    }
+} else {
+    trait ExpectUserDeprecationMessageTrait
+    {
+    }
+}
diff --git a/Extension/EnableClockMockSubscriber.php b/Extension/EnableClockMockSubscriber.php
new file mode 100644
index 00000000..b3d56334
--- /dev/null
+++ b/Extension/EnableClockMockSubscriber.php
@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Extension;
+
+use PHPUnit\Event\Code\TestMethod;
+use PHPUnit\Event\Test\PreparationStarted;
+use PHPUnit\Event\Test\PreparationStartedSubscriber;
+use PHPUnit\Metadata\Group;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+use Symfony\Bridge\PhpUnit\ClockMock;
+use Symfony\Bridge\PhpUnit\Metadata\AttributeReader;
+
+/**
+ * @internal
+ */
+class EnableClockMockSubscriber implements PreparationStartedSubscriber
+{
+    public function __construct(
+        private AttributeReader $reader,
+    ) {
+    }
+
+    public function notify(PreparationStarted $event): void
+    {
+        $test = $event->test();
+
+        if (!$test instanceof TestMethod) {
+            return;
+        }
+
+        foreach ($test->metadata() as $metadata) {
+            if ($metadata instanceof Group && 'time-sensitive' === $metadata->groupName()) {
+                ClockMock::withClockMock(true);
+                break;
+            }
+        }
+
+        if ($this->reader->forClassAndMethod($test->className(), $test->methodName(), TimeSensitive::class)) {
+            ClockMock::withClockMock(true);
+        }
+    }
+}
diff --git a/Extension/RegisterClockMockSubscriber.php b/Extension/RegisterClockMockSubscriber.php
new file mode 100644
index 00000000..b89f1640
--- /dev/null
+++ b/Extension/RegisterClockMockSubscriber.php
@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Extension;
+
+use PHPUnit\Event\Code\TestMethod;
+use PHPUnit\Event\TestSuite\Loaded;
+use PHPUnit\Event\TestSuite\LoadedSubscriber;
+use PHPUnit\Metadata\Group;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+use Symfony\Bridge\PhpUnit\ClockMock;
+use Symfony\Bridge\PhpUnit\Metadata\AttributeReader;
+
+/**
+ * @internal
+ */
+class RegisterClockMockSubscriber implements LoadedSubscriber
+{
+    public function __construct(
+        private AttributeReader $reader,
+    ) {
+    }
+
+    public function notify(Loaded $event): void
+    {
+        foreach ($event->testSuite()->tests() as $test) {
+            if (!$test instanceof TestMethod) {
+                continue;
+            }
+
+            foreach ($test->metadata() as $metadata) {
+                if ($metadata instanceof Group && 'time-sensitive' === $metadata->groupName()) {
+                    ClockMock::register($test->className());
+                }
+            }
+
+            foreach ($this->reader->forClassAndMethod($test->className(), $test->methodName(), TimeSensitive::class) as $attribute) {
+                ClockMock::register($attribute->class ?? $test->className());
+            }
+        }
+    }
+}
diff --git a/Extension/RegisterDnsMockSubscriber.php b/Extension/RegisterDnsMockSubscriber.php
new file mode 100644
index 00000000..80e9a337
--- /dev/null
+++ b/Extension/RegisterDnsMockSubscriber.php
@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Extension;
+
+use PHPUnit\Event\Code\TestMethod;
+use PHPUnit\Event\TestSuite\Loaded;
+use PHPUnit\Event\TestSuite\LoadedSubscriber;
+use PHPUnit\Metadata\Group;
+use Symfony\Bridge\PhpUnit\Attribute\DnsSensitive;
+use Symfony\Bridge\PhpUnit\DnsMock;
+use Symfony\Bridge\PhpUnit\Metadata\AttributeReader;
+
+/**
+ * @internal
+ */
+class RegisterDnsMockSubscriber implements LoadedSubscriber
+{
+    public function __construct(
+        private AttributeReader $reader,
+    ) {
+    }
+
+    public function notify(Loaded $event): void
+    {
+        foreach ($event->testSuite()->tests() as $test) {
+            if (!$test instanceof TestMethod) {
+                continue;
+            }
+
+            foreach ($test->metadata() as $metadata) {
+                if ($metadata instanceof Group && 'dns-sensitive' === $metadata->groupName()) {
+                    DnsMock::register($test->className());
+                }
+            }
+
+            foreach ($this->reader->forClassAndMethod($test->className(), $test->methodName(), DnsSensitive::class) as $attribute) {
+                DnsMock::register($attribute->class ?? $test->className());
+            }
+        }
+    }
+}
diff --git a/Legacy/CommandForV7.php b/Legacy/CommandForV8.php
similarity index 97%
rename from Legacy/CommandForV7.php
rename to Legacy/CommandForV8.php
index 99a1e683..ffeb2b81 100644
--- a/Legacy/CommandForV7.php
+++ b/Legacy/CommandForV8.php
@@ -19,7 +19,7 @@
 /**
  * @internal
  */
-class CommandForV7 extends BaseCommand
+class CommandForV8 extends BaseCommand
 {
     protected function createRunner(): BaseRunner
     {
diff --git a/Legacy/ConstraintTraitForV7.php b/Legacy/ConstraintTraitForV7.php
deleted file mode 100644
index b132f473..00000000
--- a/Legacy/ConstraintTraitForV7.php
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Bridge\PhpUnit\Legacy;
-
-use SebastianBergmann\Exporter\Exporter;
-
-/**
- * @internal
- */
-trait ConstraintTraitForV7
-{
-    use ConstraintLogicTrait;
-
-    /**
-     * @return bool|null
-     */
-    public function evaluate($other, $description = '', $returnResult = false)
-    {
-        return $this->doEvaluate($other, $description, $returnResult);
-    }
-
-    public function count(): int
-    {
-        return $this->doCount();
-    }
-
-    public function toString(): string
-    {
-        return $this->doToString();
-    }
-
-    protected function additionalFailureDescription($other): string
-    {
-        return $this->doAdditionalFailureDescription($other);
-    }
-
-    protected function exporter(): Exporter
-    {
-        if (null === $this->exporter) {
-            $this->exporter = new Exporter();
-        }
-
-        return $this->exporter;
-    }
-
-    protected function failureDescription($other): string
-    {
-        return $this->doFailureDescription($other);
-    }
-
-    protected function matches($other): bool
-    {
-        return $this->doMatches($other);
-    }
-}
diff --git a/Legacy/ExpectDeprecationTraitForV8_4.php b/Legacy/ExpectDeprecationTraitForV8_4.php
index d1596352..95823c2c 100644
--- a/Legacy/ExpectDeprecationTraitForV8_4.php
+++ b/Legacy/ExpectDeprecationTraitForV8_4.php
@@ -22,7 +22,7 @@ trait ExpectDeprecationTraitForV8_4
     public function expectDeprecation(): void
     {
         if (1 > \func_num_args() || !\is_string($message = func_get_arg(0))) {
-            throw new \InvalidArgumentException(sprintf('The "%s()" method requires the string $message argument.', __FUNCTION__));
+            throw new \InvalidArgumentException(\sprintf('The "%s()" method requires the string $message argument.', __FUNCTION__));
         }
 
         // Expected deprecations set by isolated tests need to be written to a file
@@ -52,7 +52,7 @@ public function expectDeprecation(): void
      */
     public function expectDeprecationMessage(string $message): void
     {
-        throw new \BadMethodCallException(sprintf('The "%s()" method is not supported by Symfony\'s PHPUnit Bridge ExpectDeprecationTrait, pass the message to expectDeprecation() instead.', __FUNCTION__));
+        throw new \BadMethodCallException(\sprintf('The "%s()" method is not supported by Symfony\'s PHPUnit Bridge ExpectDeprecationTrait, pass the message to expectDeprecation() instead.', __FUNCTION__));
     }
 
     /**
@@ -60,6 +60,6 @@ public function expectDeprecationMessage(string $message): void
      */
     public function expectDeprecationMessageMatches(string $regularExpression): void
     {
-        throw new \BadMethodCallException(sprintf('The "%s()" method is not supported by Symfony\'s PHPUnit Bridge ExpectDeprecationTrait.', __FUNCTION__));
+        throw new \BadMethodCallException(\sprintf('The "%s()" method is not supported by Symfony\'s PHPUnit Bridge ExpectDeprecationTrait.', __FUNCTION__));
     }
 }
diff --git a/Legacy/PolyfillTestCaseTrait.php b/Legacy/PolyfillTestCaseTrait.php
deleted file mode 100644
index 8673bdc0..00000000
--- a/Legacy/PolyfillTestCaseTrait.php
+++ /dev/null
@@ -1,116 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Bridge\PhpUnit\Legacy;
-
-use PHPUnit\Framework\Error\Error;
-use PHPUnit\Framework\Error\Notice;
-use PHPUnit\Framework\Error\Warning;
-
-/**
- * This trait is @internal.
- */
-trait PolyfillTestCaseTrait
-{
-    /**
-     * @param string $messageRegExp
-     *
-     * @return void
-     */
-    public function expectExceptionMessageMatches($messageRegExp)
-    {
-        $this->expectExceptionMessageRegExp($messageRegExp);
-    }
-
-    /**
-     * @return void
-     */
-    public function expectNotice()
-    {
-        $this->expectException(Notice::class);
-    }
-
-    /**
-     * @param string $message
-     *
-     * @return void
-     */
-    public function expectNoticeMessage($message)
-    {
-        $this->expectExceptionMessage($message);
-    }
-
-    /**
-     * @param string $regularExpression
-     *
-     * @return void
-     */
-    public function expectNoticeMessageMatches($regularExpression)
-    {
-        $this->expectExceptionMessageMatches($regularExpression);
-    }
-
-    /**
-     * @return void
-     */
-    public function expectWarning()
-    {
-        $this->expectException(Warning::class);
-    }
-
-    /**
-     * @param string $message
-     *
-     * @return void
-     */
-    public function expectWarningMessage($message)
-    {
-        $this->expectExceptionMessage($message);
-    }
-
-    /**
-     * @param string $regularExpression
-     *
-     * @return void
-     */
-    public function expectWarningMessageMatches($regularExpression)
-    {
-        $this->expectExceptionMessageMatches($regularExpression);
-    }
-
-    /**
-     * @return void
-     */
-    public function expectError()
-    {
-        $this->expectException(Error::class);
-    }
-
-    /**
-     * @param string $message
-     *
-     * @return void
-     */
-    public function expectErrorMessage($message)
-    {
-        $this->expectExceptionMessage($message);
-    }
-
-    /**
-     * @param string $regularExpression
-     *
-     * @return void
-     */
-    public function expectErrorMessageMatches($regularExpression)
-    {
-        $this->expectExceptionMessageMatches($regularExpression);
-    }
-}
diff --git a/Legacy/SymfonyTestsListenerTrait.php b/Legacy/SymfonyTestsListenerTrait.php
index 4e591c76..2b7a3d1b 100644
--- a/Legacy/SymfonyTestsListenerTrait.php
+++ b/Legacy/SymfonyTestsListenerTrait.php
@@ -58,7 +58,7 @@ public function __construct(array $mockedNamespaces = [])
             (new ExcludeList())->getExcludedDirectories();
             ExcludeList::addDirectory(\dirname((new \ReflectionClass(__CLASS__))->getFileName(), 2));
         } elseif (method_exists(Blacklist::class, 'addDirectory')) {
-            (new BlackList())->getBlacklistedDirectories();
+            (new Blacklist())->getBlacklistedDirectories();
             Blacklist::addDirectory(\dirname((new \ReflectionClass(__CLASS__))->getFileName(), 2));
         } else {
             Blacklist::$blacklistedClassNames[__CLASS__] = 2;
@@ -125,7 +125,7 @@ public function startTestSuite($suite): void
             if (!$test instanceof TestCase) {
                 continue;
             }
-            if (null === Test::getPreserveGlobalStateSettings(\get_class($test), $test->getName(false))) {
+            if (null === Test::getPreserveGlobalStateSettings($test::class, $test->getName(false))) {
                 $test->setPreserveGlobalState(false);
             }
         }
@@ -182,7 +182,7 @@ public function startTestSuite($suite): void
                         continue;
                     }
                     if ($test instanceof TestCase
-                        && isset($this->wasSkipped[\get_class($test)][$test->getName()])
+                        && isset($this->wasSkipped[$test::class][$test->getName()])
                     ) {
                         $skipped[] = $test;
                     }
@@ -197,10 +197,10 @@ public function addSkippedTest($test, \Exception $e, $time): void
         if (0 < $this->state) {
             if ($test instanceof DataProviderTestSuite) {
                 foreach ($test->tests() as $testWithDataProvider) {
-                    $this->isSkipped[\get_class($testWithDataProvider)][$testWithDataProvider->getName()] = 1;
+                    $this->isSkipped[$testWithDataProvider::class][$testWithDataProvider->getName()] = 1;
                 }
             } else {
-                $this->isSkipped[\get_class($test)][$test->getName()] = 1;
+                $this->isSkipped[$test::class][$test->getName()] = 1;
             }
         }
     }
@@ -221,15 +221,15 @@ public function startTest($test): void
                 putenv('SYMFONY_EXPECTED_DEPRECATIONS_SERIALIZE='.tempnam(sys_get_temp_dir(), 'expectdeprec'));
             }
 
-            $groups = Test::getGroups(\get_class($test), $test->getName(false));
+            $groups = Test::getGroups($test::class, $test->getName(false));
 
             if (!$this->runsInSeparateProcess) {
                 if (\in_array('time-sensitive', $groups, true)) {
-                    ClockMock::register(\get_class($test));
+                    ClockMock::register($test::class);
                     ClockMock::withClockMock(true);
                 }
                 if (\in_array('dns-sensitive', $groups, true)) {
-                    DnsMock::register(\get_class($test));
+                    DnsMock::register($test::class);
                 }
             }
 
@@ -237,7 +237,7 @@ public function startTest($test): void
                 return;
             }
 
-            $annotations = Test::parseTestMethodAnnotations(\get_class($test), $test->getName(false));
+            $annotations = Test::parseTestMethodAnnotations($test::class, $test->getName(false));
 
             if (isset($annotations['class']['expectedDeprecation'])) {
                 $test->getTestResultObject()->addError($test, new AssertionFailedError('"@expectedDeprecation" annotations are not allowed at the class level.'), 0);
@@ -275,14 +275,14 @@ public function endTest($test, $time): void
             DebugClassLoader::checkClasses();
         }
 
-        $className = \get_class($test);
+        $className = $test::class;
         $groups = Test::getGroups($className, $test->getName(false));
 
         if ($this->checkNumAssertions) {
             $assertions = \count(self::$expectedDeprecations) + $test->getNumAssertions();
             if ($test instanceof TestCase && $test->doesNotPerformAssertions() && $assertions > 0) {
-                $test->getTestResultObject()->addFailure($test, new RiskyTestError(sprintf('This test is annotated with "@doesNotPerformAssertions", but performed %s assertions', $assertions)), $time);
-            } elseif ($test instanceof TestCase && $assertions === 0 && !$test->doesNotPerformAssertions() && $test->getTestResultObject()->noneSkipped()) {
+                $test->getTestResultObject()->addFailure($test, new RiskyTestError(\sprintf('This test is annotated with "@doesNotPerformAssertions", but performed %s assertions', $assertions)), $time);
+            } elseif ($test instanceof TestCase && 0 === $assertions && !$test->doesNotPerformAssertions() && $test->getTestResultObject()->noneSkipped()) {
                 $test->getTestResultObject()->addFailure($test, new RiskyTestError('This test did not perform any assertions'), $time);
             }
 
@@ -343,7 +343,7 @@ public static function handleError($type, $msg, $file, $line, $context = [])
 
             return $h ? $h($type, $msg, $file, $line, $context) : false;
         }
-        // If the message is serialized we need to extract the message. This occurs when the error is triggered by
+        // If the message is serialized we need to extract the message. This occurs when the error is triggered
         // by the isolated test path in \Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait::endTest().
         $parsedMsg = @unserialize($msg);
         if (\is_array($parsedMsg)) {
@@ -364,9 +364,6 @@ private function willBeIsolated(TestCase $test): bool
         }
 
         $r = new \ReflectionProperty($test, 'runTestInSeparateProcess');
-        if (\PHP_VERSION_ID < 80100) {
-            $r->setAccessible(true);
-        }
 
         return $r->getValue($test) ?? false;
     }
diff --git a/Metadata/AttributeReader.php b/Metadata/AttributeReader.php
new file mode 100644
index 00000000..ca4e4c47
--- /dev/null
+++ b/Metadata/AttributeReader.php
@@ -0,0 +1,80 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Metadata;
+
+/**
+ * @internal
+ *
+ * @template T of object
+ */
+final class AttributeReader
+{
+    /**
+     * @var array<string, array<class-string<T>, list<T>>>
+     */
+    private array $cache = [];
+
+    /**
+     * @param class-string    $className
+     * @param class-string<T> $name
+     *
+     * @return list<T>
+     */
+    public function forClass(string $className, string $name): array
+    {
+        $attributes = $this->cache[$className] ??= $this->readAttributes(new \ReflectionClass($className));
+
+        return $attributes[$name] ?? [];
+    }
+
+    /**
+     * @param class-string    $className
+     * @param class-string<T> $name
+     *
+     * @return list<T>
+     */
+    public function forMethod(string $className, string $methodName, string $name): array
+    {
+        $attributes = $this->cache[$className.'::'.$methodName] ??= $this->readAttributes(new \ReflectionMethod($className, $methodName));
+
+        return $attributes[$name] ?? [];
+    }
+
+    /**
+     * @param class-string    $className
+     * @param class-string<T> $name
+     *
+     * @return list<T>
+     */
+    public function forClassAndMethod(string $className, string $methodName, string $name): array
+    {
+        return [
+            ...$this->forClass($className, $name),
+            ...$this->forMethod($className, $methodName, $name),
+        ];
+    }
+
+    private function readAttributes(\ReflectionClass|\ReflectionMethod $reflection): array
+    {
+        $attributeInstances = [];
+
+        foreach ($reflection->getAttributes() as $attribute) {
+            if (!str_starts_with($name = $attribute->getName(), 'Symfony\\Bridge\\PhpUnit\\Attribute\\')) {
+                continue;
+            }
+
+            $attributeInstances[$name][] = $attribute->newInstance();
+        }
+
+        return $attributeInstances;
+    }
+}
diff --git a/SymfonyExtension.php b/SymfonyExtension.php
new file mode 100644
index 00000000..a4f28a78
--- /dev/null
+++ b/SymfonyExtension.php
@@ -0,0 +1,159 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit;
+
+use Doctrine\Deprecations\Deprecation;
+use PHPUnit\Event\Code\Test;
+use PHPUnit\Event\Code\TestMethod;
+use PHPUnit\Event\Test\BeforeTestMethodErrored;
+use PHPUnit\Event\Test\BeforeTestMethodErroredSubscriber;
+use PHPUnit\Event\Test\Errored;
+use PHPUnit\Event\Test\ErroredSubscriber;
+use PHPUnit\Event\Test\Finished;
+use PHPUnit\Event\Test\FinishedSubscriber;
+use PHPUnit\Event\Test\Skipped;
+use PHPUnit\Event\Test\SkippedSubscriber;
+use PHPUnit\Metadata\Group;
+use PHPUnit\Runner\Extension\Extension;
+use PHPUnit\Runner\Extension\Facade;
+use PHPUnit\Runner\Extension\ParameterCollection;
+use PHPUnit\TextUI\Configuration\Configuration;
+use Symfony\Bridge\PhpUnit\Attribute\DnsSensitive;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+use Symfony\Bridge\PhpUnit\Extension\EnableClockMockSubscriber;
+use Symfony\Bridge\PhpUnit\Extension\RegisterClockMockSubscriber;
+use Symfony\Bridge\PhpUnit\Extension\RegisterDnsMockSubscriber;
+use Symfony\Bridge\PhpUnit\Metadata\AttributeReader;
+use Symfony\Component\ErrorHandler\DebugClassLoader;
+
+class SymfonyExtension implements Extension
+{
+    public function bootstrap(Configuration $configuration, Facade $facade, ParameterCollection $parameters): void
+    {
+        if (class_exists(DebugClassLoader::class)) {
+            DebugClassLoader::enable();
+        }
+
+        if (class_exists(Deprecation::class)) {
+            Deprecation::withoutDeduplication();
+        }
+
+        $reader = new AttributeReader();
+
+        if ($parameters->has('clock-mock-namespaces')) {
+            foreach (explode(',', $parameters->get('clock-mock-namespaces')) as $namespace) {
+                ClockMock::register($namespace.'\DummyClass');
+            }
+        }
+
+        $facade->registerSubscriber(new RegisterClockMockSubscriber($reader));
+        $facade->registerSubscriber(new EnableClockMockSubscriber($reader));
+        $facade->registerSubscriber(new class($reader) implements ErroredSubscriber {
+            public function __construct(private AttributeReader $reader)
+            {
+            }
+
+            public function notify(Errored $event): void
+            {
+                SymfonyExtension::disableClockMock($event->test(), $this->reader);
+                SymfonyExtension::disableDnsMock($event->test(), $this->reader);
+            }
+        });
+        $facade->registerSubscriber(new class($reader) implements FinishedSubscriber {
+            public function __construct(private AttributeReader $reader)
+            {
+            }
+
+            public function notify(Finished $event): void
+            {
+                SymfonyExtension::disableClockMock($event->test(), $this->reader);
+                SymfonyExtension::disableDnsMock($event->test(), $this->reader);
+            }
+        });
+        $facade->registerSubscriber(new class($reader) implements SkippedSubscriber {
+            public function __construct(private AttributeReader $reader)
+            {
+            }
+
+            public function notify(Skipped $event): void
+            {
+                SymfonyExtension::disableClockMock($event->test(), $this->reader);
+                SymfonyExtension::disableDnsMock($event->test(), $this->reader);
+            }
+        });
+
+        if (interface_exists(BeforeTestMethodErroredSubscriber::class)) {
+            $facade->registerSubscriber(new class($reader) implements BeforeTestMethodErroredSubscriber {
+                public function __construct(private AttributeReader $reader)
+                {
+                }
+
+                public function notify(BeforeTestMethodErrored $event): void
+                {
+                    if (method_exists($event, 'test')) {
+                        SymfonyExtension::disableClockMock($event->test(), $this->reader);
+                        SymfonyExtension::disableDnsMock($event->test(), $this->reader);
+                    } else {
+                        ClockMock::withClockMock(false);
+                        DnsMock::withMockedHosts([]);
+                    }
+                }
+            });
+        }
+
+        if ($parameters->has('dns-mock-namespaces')) {
+            foreach (explode(',', $parameters->get('dns-mock-namespaces')) as $namespace) {
+                DnsMock::register($namespace.'\DummyClass');
+            }
+        }
+
+        $facade->registerSubscriber(new RegisterDnsMockSubscriber($reader));
+    }
+
+    /**
+     * @internal
+     */
+    public static function disableClockMock(Test $test, AttributeReader $reader): void
+    {
+        if (self::hasGroup($test, 'time-sensitive', $reader, TimeSensitive::class)) {
+            ClockMock::withClockMock(false);
+        }
+    }
+
+    /**
+     * @internal
+     */
+    public static function disableDnsMock(Test $test, AttributeReader $reader): void
+    {
+        if (self::hasGroup($test, 'dns-sensitive', $reader, DnsSensitive::class)) {
+            DnsMock::withMockedHosts([]);
+        }
+    }
+
+    /**
+     * @internal
+     */
+    public static function hasGroup(Test $test, string $groupName, AttributeReader $reader, string $attribute): bool
+    {
+        if (!$test instanceof TestMethod) {
+            return false;
+        }
+
+        foreach ($test->metadata() as $metadata) {
+            if ($metadata instanceof Group && $groupName === $metadata->groupName()) {
+                return true;
+            }
+        }
+
+        return [] !== $reader->forClassAndMethod($test->className(), $test->methodName(), $attribute);
+    }
+}
diff --git a/Tests/ClockMockTest.php b/Tests/ClockMockTest.php
index 7df7865d..95c354e1 100644
--- a/Tests/ClockMockTest.php
+++ b/Tests/ClockMockTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ClockMock;
 
@@ -19,6 +20,7 @@
  *
  * @covers \Symfony\Bridge\PhpUnit\ClockMock
  */
+#[CoversClass(ClockMock::class)]
 class ClockMockTest extends TestCase
 {
     public static function setUpBeforeClass(): void
@@ -79,4 +81,9 @@ public function testHrTimeAsNumber()
     {
         $this->assertSame(1234567890125000000, hrtime(true));
     }
+
+    public function testStrToTime()
+    {
+        $this->assertSame(1234567890, strtotime('now'));
+    }
 }
diff --git a/Tests/CoverageListenerTest.php b/Tests/CoverageListenerTest.php
index 19408df6..9d6e26ed 100644
--- a/Tests/CoverageListenerTest.php
+++ b/Tests/CoverageListenerTest.php
@@ -11,39 +11,29 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 
+#[RequiresPhpunit('<10')]
 class CoverageListenerTest extends TestCase
 {
     public function test()
     {
-        if ('\\' === \DIRECTORY_SEPARATOR) {
-            $this->markTestSkipped('This test cannot be run on Windows.');
-        }
-
-        exec('type phpdbg 2> /dev/null', $output, $returnCode);
-
-        if (0 === $returnCode) {
-            $php = 'phpdbg -qrr';
-        } else {
-            exec('php --ri xdebug -d zend_extension=xdebug.so 2> /dev/null', $output, $returnCode);
-            if (0 !== $returnCode) {
-                $this->markTestSkipped('Xdebug is required to run this test.');
-            }
-            $php = 'php -d zend_extension=xdebug.so';
-        }
-
         $dir = __DIR__.'/../Tests/Fixtures/coverage';
         $phpunit = $_SERVER['argv'][0];
 
+        $php = $this->findCoverageDriver();
+
+        $output = '';
         exec("$php $phpunit -c $dir/phpunit-without-listener.xml.dist $dir/tests/ --coverage-text --colors=never 2> /dev/null", $output);
         $output = implode("\n", $output);
         $this->assertMatchesRegularExpression('/FooCov\n\s*Methods:\s+100.00%[^\n]+Lines:\s+100.00%/', $output);
 
+        $output = '';
         exec("$php $phpunit -c $dir/phpunit-with-listener.xml.dist $dir/tests/ --coverage-text --colors=never 2> /dev/null", $output);
         $output = implode("\n", $output);
 
-        if (false === strpos($output, 'FooCov')) {
+        if (!str_contains($output, 'FooCov')) {
             $this->addToAssertionCount(1);
         } else {
             $this->assertMatchesRegularExpression('/FooCov\n\s*Methods:\s+0.00%[^\n]+Lines:\s+0.00%/', $output);
@@ -54,4 +44,28 @@ public function test()
         $this->assertStringNotContainsString("CoversDefaultClassTest::test\nCould not find the tested class.", $output);
         $this->assertStringNotContainsString("CoversNothingTest::test\nCould not find the tested class.", $output);
     }
+
+    private function findCoverageDriver(): string
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('This test cannot be run on Windows.');
+        }
+
+        exec('php --ri xdebug -d zend_extension=xdebug 2> /dev/null', $output, $returnCode);
+        if (0 === $returnCode) {
+            return 'php -d zend_extension=xdebug';
+        }
+
+        exec('php --ri pcov -d zend_extension=pcov 2> /dev/null', $output, $returnCode);
+        if (0 === $returnCode) {
+            return 'php -d zend_extension=pcov';
+        }
+
+        exec('type phpdbg 2> /dev/null', $output, $returnCode);
+        if (0 === $returnCode) {
+            return 'phpdbg -qrr';
+        }
+
+        $this->markTestSkipped('Xdebug or pvoc is required to run this test.');
+    }
 }
diff --git a/Tests/DeprecationErrorHandler/ConfigurationTest.php b/Tests/DeprecationErrorHandler/ConfigurationTest.php
index a2259fc1..3faadf33 100644
--- a/Tests/DeprecationErrorHandler/ConfigurationTest.php
+++ b/Tests/DeprecationErrorHandler/ConfigurationTest.php
@@ -11,12 +11,15 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler;
 
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\Configuration;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\Deprecation;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\DeprecationGroup;
 use Symfony\Component\ErrorHandler\DebugClassLoader;
 
+#[RequiresPhpunit('<10')]
 class ConfigurationTest extends TestCase
 {
     private $files;
@@ -192,6 +195,7 @@ public static function provideItCanBeDisabled(): array
     /**
      * @dataProvider provideItCanBeDisabled
      */
+    #[DataProvider('provideItCanBeDisabled')]
     public function testItCanBeDisabled(string $encodedString, bool $expectedEnabled)
     {
         $configuration = Configuration::fromUrlEncodedString($encodedString);
@@ -238,6 +242,7 @@ public function testOutputIsNotVerboseInWeakMode()
     /**
      * @dataProvider provideDataForToleratesForGroup
      */
+    #[DataProvider('provideDataForToleratesForGroup')]
     public function testToleratesForIndividualGroups(string $deprecationsHelper, array $deprecationsPerType, array $expected)
     {
         $configuration = Configuration::fromUrlEncodedString($deprecationsHelper);
@@ -245,7 +250,7 @@ public function testToleratesForIndividualGroups(string $deprecationsHelper, arr
         $groups = $this->buildGroups($deprecationsPerType);
 
         foreach ($expected as $groupName => $tolerates) {
-            $this->assertSame($tolerates, $configuration->toleratesForGroup($groupName, $groups), sprintf('Deprecation type "%s" is %s', $groupName, $tolerates ? 'tolerated' : 'not tolerated'));
+            $this->assertSame($tolerates, $configuration->toleratesForGroup($groupName, $groups), \sprintf('Deprecation type "%s" is %s', $groupName, $tolerates ? 'tolerated' : 'not tolerated'));
         }
     }
 
@@ -474,7 +479,7 @@ public function testBaselineGenerationWithDeprecationTriggeredByDebugClassLoader
         $trace[2] = [
             'class' => DebugClassLoader::class,
             'function' => 'testBaselineGenerationWithDeprecationTriggeredByDebugClassLoader',
-            'args' => [self::class]
+            'args' => [self::class],
         ];
 
         $deprecation = new Deprecation('Deprecation by debug class loader', $trace, '');
@@ -512,7 +517,7 @@ public function testBaselineFileException()
         $filename = $this->createFile();
         unlink($filename);
         $this->expectException(\InvalidArgumentException::class);
-        $this->expectExceptionMessage(sprintf('The baselineFile "%s" does not exist.', $filename));
+        $this->expectExceptionMessage(\sprintf('The baselineFile "%s" does not exist.', $filename));
         Configuration::fromUrlEncodedString('baselineFile='.urlencode($filename));
     }
 
@@ -526,7 +531,7 @@ public function testBaselineFileWriteError()
         $this->expectExceptionMessageMatches('/[Ff]ailed to open stream: Permission denied/');
 
         set_error_handler(static function (int $errno, string $errstr, ?string $errfile = null, ?int $errline = null): bool {
-            if ($errno & (E_WARNING | E_WARNING)) {
+            if ($errno & (\E_WARNING | \E_WARNING)) {
                 throw new \ErrorException($errstr, 0, $errno, $errfile, $errline);
             }
 
@@ -592,7 +597,7 @@ public function testIgnoreFileException()
         $filename = $this->createFile();
         unlink($filename);
         $this->expectException(\InvalidArgumentException::class);
-        $this->expectExceptionMessage(sprintf('The ignoreFile "%s" does not exist.', $filename));
+        $this->expectExceptionMessage(\sprintf('The ignoreFile "%s" does not exist.', $filename));
         Configuration::fromUrlEncodedString('ignoreFile='.urlencode($filename));
     }
 
diff --git a/Tests/DeprecationErrorHandler/DeprecationGroupTest.php b/Tests/DeprecationErrorHandler/DeprecationGroupTest.php
index df746e5e..38c9e27e 100644
--- a/Tests/DeprecationErrorHandler/DeprecationGroupTest.php
+++ b/Tests/DeprecationErrorHandler/DeprecationGroupTest.php
@@ -1,10 +1,21 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler;
 
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\DeprecationGroup;
 
+#[RequiresPhpunit('<10')]
 final class DeprecationGroupTest extends TestCase
 {
     public function testItGroupsByMessage()
diff --git a/Tests/DeprecationErrorHandler/DeprecationNoticeTest.php b/Tests/DeprecationErrorHandler/DeprecationNoticeTest.php
index c0a88c44..6e093613 100644
--- a/Tests/DeprecationErrorHandler/DeprecationNoticeTest.php
+++ b/Tests/DeprecationErrorHandler/DeprecationNoticeTest.php
@@ -1,10 +1,21 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler;
 
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\DeprecationNotice;
 
+#[RequiresPhpunit('<10')]
 final class DeprecationNoticeTest extends TestCase
 {
     public function testItGroupsByCaller()
diff --git a/Tests/DeprecationErrorHandler/DeprecationTest.php b/Tests/DeprecationErrorHandler/DeprecationTest.php
index 2a7643a9..bad55d1e 100644
--- a/Tests/DeprecationErrorHandler/DeprecationTest.php
+++ b/Tests/DeprecationErrorHandler/DeprecationTest.php
@@ -11,11 +11,14 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler;
 
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\Deprecation;
 use Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerForV7;
 
+#[RequiresPhpunit('<10')]
 class DeprecationTest extends TestCase
 {
     private static $vendorDir;
@@ -28,7 +31,7 @@ private static function getVendorDir()
         }
 
         foreach (get_declared_classes() as $class) {
-            if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
+            if ('C' === $class[0] && str_starts_with($class, 'ComposerAutoloaderInit')) {
                 $r = new \ReflectionClass($class);
                 $vendorDir = \dirname($r->getFileName(), 2);
                 if (file_exists($vendorDir.'/composer/installed.json') && @mkdir($vendorDir.'/myfakevendor/myfakepackage1', 0777, true)) {
@@ -88,6 +91,7 @@ public function testItRulesOutFilesOutsideVendorsAsIndirect()
     /**
      * @dataProvider mutedProvider
      */
+    #[DataProvider('mutedProvider')]
     public function testItMutesOnlySpecificErrorMessagesWhenTheCallingCodeIsInPhpunit($muted, $callingClass, $message)
     {
         $trace = $this->debugBacktrace();
@@ -170,6 +174,7 @@ public static function providerGetTypeDetectsSelf(): array
     /**
      * @dataProvider providerGetTypeDetectsSelf
      */
+    #[DataProvider('providerGetTypeDetectsSelf')]
     public function testGetTypeDetectsSelf(string $expectedType, string $message, string $traceClass, string $file)
     {
         $trace = [
@@ -233,6 +238,7 @@ public static function providerGetTypeUsesRightTrace(): array
     /**
      * @dataProvider providerGetTypeUsesRightTrace
      */
+    #[DataProvider('providerGetTypeUsesRightTrace')]
     public function testGetTypeUsesRightTrace(string $expectedType, string $message, array $trace)
     {
         $deprecation = new Deprecation(
@@ -268,16 +274,13 @@ private static function removeDir($dir)
     public static function setUpBeforeClass(): void
     {
         foreach (get_declared_classes() as $class) {
-            if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
+            if ('C' === $class[0] && str_starts_with($class, 'ComposerAutoloaderInit')) {
                 $r = new \ReflectionClass($class);
                 $v = \dirname($r->getFileName(), 2);
                 if (file_exists($v.'/composer/installed.json')) {
                     $loader = require $v.'/autoload.php';
                     $reflection = new \ReflectionClass($loader);
                     $prop = $reflection->getProperty('prefixDirsPsr4');
-                    if (\PHP_VERSION_ID < 80100) {
-                        $prop->setAccessible(true);
-                    }
                     $currentValue = $prop->getValue($loader);
                     self::$prefixDirsPsr4[] = [$prop, $loader, $currentValue];
                     $currentValue['Symfony\\Bridge\\PhpUnit\\'] = [realpath(__DIR__.'/../..')];
diff --git a/Tests/DeprecationErrorHandler/deprecation/deprecation.php b/Tests/DeprecationErrorHandler/deprecation/deprecation.php
index 92efd950..0ea3e5c3 100644
--- a/Tests/DeprecationErrorHandler/deprecation/deprecation.php
+++ b/Tests/DeprecationErrorHandler/deprecation/deprecation.php
@@ -1,3 +1,12 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 @trigger_error('I come from… afar! :D', \E_USER_DEPRECATED);
diff --git a/Tests/DeprecationErrorHandler/fake_app/AppService.php b/Tests/DeprecationErrorHandler/fake_app/AppService.php
index 2b6cb316..b8f6dc25 100644
--- a/Tests/DeprecationErrorHandler/fake_app/AppService.php
+++ b/Tests/DeprecationErrorHandler/fake_app/AppService.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace App\Services;
 
 use acme\lib\SomeService;
@@ -20,9 +29,9 @@ public function selfDeprecation(bool $useContracts = false)
     {
         $args = [__FUNCTION__, __FUNCTION__];
         if ($useContracts) {
-            trigger_deprecation('App', '3.0', sprintf('%s is deprecated, use %s_new instead.', ...$args));
+            trigger_deprecation('App', '3.0', \sprintf('%s is deprecated, use %s_new instead.', ...$args));
         } else {
-            @trigger_error(sprintf('Since App 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
+            @trigger_error(\sprintf('Since App 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
         }
     }
 
diff --git a/Tests/DeprecationErrorHandler/fake_app/BarService.php b/Tests/DeprecationErrorHandler/fake_app/BarService.php
index 868de5bd..5e0d66c0 100644
--- a/Tests/DeprecationErrorHandler/fake_app/BarService.php
+++ b/Tests/DeprecationErrorHandler/fake_app/BarService.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace App\Services;
 
 use acme\lib\ExtendsDeprecatedClassFromOtherVendor;
diff --git a/Tests/DeprecationErrorHandler/fake_app/ExtendsDeprecatedFromVendor.php b/Tests/DeprecationErrorHandler/fake_app/ExtendsDeprecatedFromVendor.php
index b4305e0d..2105c3ca 100644
--- a/Tests/DeprecationErrorHandler/fake_app/ExtendsDeprecatedFromVendor.php
+++ b/Tests/DeprecationErrorHandler/fake_app/ExtendsDeprecatedFromVendor.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace App\Services;
 
 use fcy\lib\DeprecatedClass;
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/ExtendsDeprecatedClassFromOtherVendor.php b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/ExtendsDeprecatedClassFromOtherVendor.php
index f748109d..600faca8 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/ExtendsDeprecatedClassFromOtherVendor.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/ExtendsDeprecatedClassFromOtherVendor.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace acme\lib;
 
 use fcy\lib\DeprecatedClass;
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/PhpDeprecation.php b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/PhpDeprecation.php
index 26a3237e..e38211b1 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/PhpDeprecation.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/PhpDeprecation.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace acme\lib;
 
 class PhpDeprecation implements \Serializable
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/SomeService.php b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/SomeService.php
index cc237e61..6064426f 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/SomeService.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/SomeService.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace acme\lib;
 
 use bar\lib\AnotherService;
@@ -10,9 +19,9 @@ public function deprecatedApi(bool $useContracts = false)
     {
         $args = [__FUNCTION__, __FUNCTION__];
         if ($useContracts) {
-            trigger_deprecation('acme/lib', '3.0', sprintf('%s is deprecated, use %s_new instead.', ...$args));
+            trigger_deprecation('acme/lib', '3.0', \sprintf('%s is deprecated, use %s_new instead.', ...$args));
         } else {
-            @trigger_error(sprintf('Since acme/lib 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
+            @trigger_error(\sprintf('Since acme/lib 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
         }
     }
 
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
index c6507d7f..5784566c 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 eval(<<<'EOPHP'
 namespace PHPUnit\Util;
 
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/autoload.php b/Tests/DeprecationErrorHandler/fake_vendor/autoload.php
index 3c4471bc..68db330c 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/autoload.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/autoload.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 require_once __DIR__.'/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFake::getLoader();
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/bar/lib/AnotherService.php b/Tests/DeprecationErrorHandler/fake_vendor/bar/lib/AnotherService.php
index 2e2f0f9b..27241866 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/bar/lib/AnotherService.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/bar/lib/AnotherService.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace bar\lib;
 
 class AnotherService
@@ -8,9 +17,9 @@ public function deprecatedApi(bool $useContracts = false)
     {
         $args = [__FUNCTION__, __FUNCTION__];
         if ($useContracts) {
-            trigger_deprecation('bar/lib', '3.0', sprintf('%s is deprecated, use %s_new instead.', ...$args));
+            trigger_deprecation('bar/lib', '3.0', \sprintf('%s is deprecated, use %s_new instead.', ...$args));
         } else {
-            @trigger_error(sprintf('Since bar/lib 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
+            @trigger_error(\sprintf('Since bar/lib 3.0: %s is deprecated, use %s_new instead.', ...$args), \E_USER_DEPRECATED);
         }
     }
 }
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/composer/autoload_real.php b/Tests/DeprecationErrorHandler/fake_vendor/composer/autoload_real.php
index 4b80d96c..231ae4f5 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/composer/autoload_real.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/composer/autoload_real.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 class ComposerLoaderFake
 {
     public function getPrefixes()
@@ -27,7 +36,7 @@ public function loadClass($className)
     public function findFile($class)
     {
         foreach ($this->getPrefixesPsr4() as $prefix => $baseDirs) {
-            if (0 !== strpos($class, $prefix)) {
+            if (!str_starts_with($class, $prefix)) {
                 continue;
             }
 
diff --git a/Tests/DeprecationErrorHandler/fake_vendor/fcy/lib/DeprecatedClass.php b/Tests/DeprecationErrorHandler/fake_vendor/fcy/lib/DeprecatedClass.php
index f6672cea..16edcaf6 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor/fcy/lib/DeprecatedClass.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor/fcy/lib/DeprecatedClass.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace fcy\lib;
 
 /**
diff --git a/Tests/DeprecationErrorHandler/fake_vendor_bis/autoload.php b/Tests/DeprecationErrorHandler/fake_vendor_bis/autoload.php
index c1c96392..f1aec32c 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor_bis/autoload.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor_bis/autoload.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 require_once __DIR__.'/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFakeBis::getLoader();
diff --git a/Tests/DeprecationErrorHandler/fake_vendor_bis/composer/autoload_real.php b/Tests/DeprecationErrorHandler/fake_vendor_bis/composer/autoload_real.php
index aabb103e..2a52065d 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor_bis/composer/autoload_real.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor_bis/composer/autoload_real.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 class ComposerLoaderFakeBis
 {
     public function getPrefixes()
@@ -17,7 +26,7 @@ public function getPrefixesPsr4()
     public function loadClass($className)
     {
         foreach ($this->getPrefixesPsr4() as $prefix => $baseDirs) {
-            if (0 !== strpos($className, $prefix)) {
+            if (!str_starts_with($className, $prefix)) {
                 continue;
             }
 
diff --git a/Tests/DeprecationErrorHandler/fake_vendor_bis/foo/lib/SomeOtherService.php b/Tests/DeprecationErrorHandler/fake_vendor_bis/foo/lib/SomeOtherService.php
index 8ab32307..d9c67b1c 100644
--- a/Tests/DeprecationErrorHandler/fake_vendor_bis/foo/lib/SomeOtherService.php
+++ b/Tests/DeprecationErrorHandler/fake_vendor_bis/foo/lib/SomeOtherService.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace foo\lib;
 
 class SomeOtherService
diff --git a/Tests/DeprecationErrorHandler/generate_phar.php b/Tests/DeprecationErrorHandler/generate_phar.php
index 75125d51..df875111 100644
--- a/Tests/DeprecationErrorHandler/generate_phar.php
+++ b/Tests/DeprecationErrorHandler/generate_phar.php
@@ -1,4 +1,13 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 $phar = new Phar(__DIR__.\DIRECTORY_SEPARATOR.'deprecation.phar', 0, 'deprecation.phar');
 $phar->buildFromDirectory(__DIR__.\DIRECTORY_SEPARATOR.'deprecation');
diff --git a/Tests/DeprecationErrorHandler/log_file.phpt b/Tests/DeprecationErrorHandler/log_file.phpt
index de0f4e2e..866e9686 100644
--- a/Tests/DeprecationErrorHandler/log_file.phpt
+++ b/Tests/DeprecationErrorHandler/log_file.phpt
@@ -1,8 +1,10 @@
 --TEST--
 Test DeprecationErrorHandler with log file
+--SKIPIF--
+<?php if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10.0', '>=')) echo 'Skipping on PHPUnit 10+';
 --FILE--
 <?php
-$filename = tempnam(sys_get_temp_dir(), 'sf-').uniqid('', true);
+$filename = tempnam(sys_get_temp_dir(), 'sf-');
 $k = 'SYMFONY_DEPRECATIONS_HELPER';
 putenv($k.'='.$_SERVER[$k] = $_ENV[$k] = 'logFile='.$filename);
 putenv('ANSICON');
diff --git a/Tests/DeprecationErrorHandler/php_deprecation_from_vendor_class.phpt b/Tests/DeprecationErrorHandler/php_deprecation_from_vendor_class.phpt
index 38bf7ce8..bfa38585 100644
--- a/Tests/DeprecationErrorHandler/php_deprecation_from_vendor_class.phpt
+++ b/Tests/DeprecationErrorHandler/php_deprecation_from_vendor_class.phpt
@@ -1,7 +1,5 @@
 --TEST--
 Test that a PHP deprecation from a vendor class autoload is considered indirect.
---SKIPIF--
-<?php if (\PHP_VERSION_ID < 80100) echo 'skip'; ?>
 --FILE--
 <?php
 
diff --git a/Tests/EnumExistsMockTest.php b/Tests/EnumExistsMockTest.php
index 21cdd290..975191eb 100644
--- a/Tests/EnumExistsMockTest.php
+++ b/Tests/EnumExistsMockTest.php
@@ -16,9 +16,6 @@
 use Symfony\Bridge\PhpUnit\Tests\Fixtures\ExistingEnum;
 use Symfony\Bridge\PhpUnit\Tests\Fixtures\ExistingEnumReal;
 
-/**
- * @requires PHP 8.1
- */
 class EnumExistsMockTest extends TestCase
 {
     public static function setUpBeforeClass(): void
diff --git a/Tests/ExpectDeprecationTraitTest.php b/Tests/ExpectDeprecationTraitTest.php
index 224e9940..0a4854dd 100644
--- a/Tests/ExpectDeprecationTraitTest.php
+++ b/Tests/ExpectDeprecationTraitTest.php
@@ -11,9 +11,13 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
+use PHPUnit\Framework\Attributes\RunInSeparateProcess;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
+#[RequiresPhpunit('<10')]
 final class ExpectDeprecationTraitTest extends TestCase
 {
     use ExpectDeprecationTrait;
@@ -23,6 +27,7 @@ final class ExpectDeprecationTraitTest extends TestCase
      *
      * @group legacy
      */
+    #[Group('legacy')]
     public function testOne()
     {
         $this->expectDeprecation('foo');
@@ -36,6 +41,8 @@ public function testOne()
      *
      * @runInSeparateProcess
      */
+    #[Group('legacy')]
+    #[RunInSeparateProcess]
     public function testOneInIsolation()
     {
         $this->expectDeprecation('foo');
@@ -47,6 +54,7 @@ public function testOneInIsolation()
      *
      * @group legacy
      */
+    #[Group('legacy')]
     public function testMany()
     {
         $this->expectDeprecation('foo');
@@ -62,6 +70,7 @@ public function testMany()
      *
      * @expectedDeprecation foo
      */
+    #[Group('legacy')]
     public function testOneWithAnnotation()
     {
         $this->expectDeprecation('bar');
@@ -77,6 +86,7 @@ public function testOneWithAnnotation()
      * @expectedDeprecation foo
      * @expectedDeprecation bar
      */
+    #[Group('legacy')]
     public function testManyWithAnnotation()
     {
         $this->expectDeprecation('ccc');
diff --git a/Tests/ExpectedDeprecationAnnotationTest.php b/Tests/ExpectedDeprecationAnnotationTest.php
index 329bf694..a3112cf7 100644
--- a/Tests/ExpectedDeprecationAnnotationTest.php
+++ b/Tests/ExpectedDeprecationAnnotationTest.php
@@ -11,8 +11,11 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 
+#[RequiresPhpunit('<10')]
 final class ExpectedDeprecationAnnotationTest extends TestCase
 {
     /**
@@ -22,6 +25,7 @@ final class ExpectedDeprecationAnnotationTest extends TestCase
      *
      * @expectedDeprecation foo
      */
+    #[Group('legacy')]
     public function testOne()
     {
         @trigger_error('foo', \E_USER_DEPRECATED);
@@ -35,6 +39,7 @@ public function testOne()
      * @expectedDeprecation foo
      * @expectedDeprecation bar
      */
+    #[Group('legacy')]
     public function testMany()
     {
         @trigger_error('foo', \E_USER_DEPRECATED);
diff --git a/Tests/FailTests/ExpectDeprecationTraitTestFail.php b/Tests/FailTests/ExpectDeprecationTraitTestFail.php
index f2eb1b1b..10da25f4 100644
--- a/Tests/FailTests/ExpectDeprecationTraitTestFail.php
+++ b/Tests/FailTests/ExpectDeprecationTraitTestFail.php
@@ -11,6 +11,9 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests\FailTests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
+use PHPUnit\Framework\Attributes\RunInSeparateProcess;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
@@ -20,6 +23,7 @@
  * This class is deliberately suffixed with *TestFail.php so that it is ignored
  * by PHPUnit. This test is designed to fail. See ../expectdeprecationfail.phpt.
  */
+#[RequiresPhpunit('<10')]
 final class ExpectDeprecationTraitTestFail extends TestCase
 {
     use ExpectDeprecationTrait;
@@ -29,6 +33,7 @@ final class ExpectDeprecationTraitTestFail extends TestCase
      *
      * @group legacy
      */
+    #[Group('legacy')]
     public function testOne()
     {
         $this->expectDeprecation('foo');
@@ -42,6 +47,8 @@ public function testOne()
      *
      * @runInSeparateProcess
      */
+    #[Group('legacy')]
+    #[RunInSeparateProcess]
     public function testOneInIsolation()
     {
         $this->expectDeprecation('foo');
diff --git a/Tests/FailTests/NoAssertionsTestNotRisky.php b/Tests/FailTests/NoAssertionsTestNotRisky.php
index 2c5832e4..bd259a50 100644
--- a/Tests/FailTests/NoAssertionsTestNotRisky.php
+++ b/Tests/FailTests/NoAssertionsTestNotRisky.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests\FailTests;
 
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
@@ -18,6 +19,7 @@
  * This class is deliberately suffixed with *TestRisky.php so that it is ignored
  * by PHPUnit. This test is designed to fail. See ../expectnotrisky.phpt.
  */
+#[RequiresPhpunit('<10')]
 final class NoAssertionsTestNotRisky extends TestCase
 {
     use ExpectDeprecationTrait;
diff --git a/Tests/FailTests/NoAssertionsTestRisky.php b/Tests/FailTests/NoAssertionsTestRisky.php
index 4a22baf1..559b86b8 100644
--- a/Tests/FailTests/NoAssertionsTestRisky.php
+++ b/Tests/FailTests/NoAssertionsTestRisky.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests\FailTests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
@@ -18,6 +20,7 @@
  * This class is deliberately suffixed with *TestRisky.php so that it is ignored
  * by PHPUnit. This test is designed to fail. See ../expectrisky.phpt.
  */
+#[RequiresPhpunit('<10')]
 final class NoAssertionsTestRisky extends TestCase
 {
     use ExpectDeprecationTrait;
@@ -27,6 +30,7 @@ final class NoAssertionsTestRisky extends TestCase
      *
      * @group legacy
      */
+    #[Group('legacy')]
     public function testOne()
     {
         $this->expectNotToPerformAssertions();
diff --git a/Tests/Fixtures/coverage/phpunit-with-listener.xml.dist b/Tests/Fixtures/coverage/phpunit-with-listener.xml.dist
index 797407e1..1dbca04b 100644
--- a/Tests/Fixtures/coverage/phpunit-with-listener.xml.dist
+++ b/Tests/Fixtures/coverage/phpunit-with-listener.xml.dist
@@ -1,30 +1,26 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/5.2/phpunit.xsd"
-         backupGlobals="false"
-         colors="true"
-         bootstrap="tests/bootstrap.php"
-         failOnRisky="true"
-         failOnWarning="true"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+    backupGlobals="false"
+    colors="true"
+    bootstrap="tests/bootstrap.php"
+    failOnRisky="true"
+    failOnWarning="true"
 >
-
+    <coverage>
+        <include>
+            <directory>src</directory>
+        </include>
+    </coverage>
     <testsuites>
         <testsuite name="Fixtures/coverage Test Suite">
             <directory>tests</directory>
         </testsuite>
     </testsuites>
-
-    <filter>
-        <whitelist>
-            <directory>src</directory>
-        </whitelist>
-    </filter>
-
     <listeners>
         <listener class="Symfony\Bridge\PhpUnit\CoverageListener">
             <arguments>
-                <null/>
+                <null />
                 <boolean>true</boolean>
             </arguments>
         </listener>
diff --git a/Tests/Fixtures/coverage/phpunit-without-listener.xml.dist b/Tests/Fixtures/coverage/phpunit-without-listener.xml.dist
index 4af525d0..40680ab2 100644
--- a/Tests/Fixtures/coverage/phpunit-without-listener.xml.dist
+++ b/Tests/Fixtures/coverage/phpunit-without-listener.xml.dist
@@ -1,23 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/5.2/phpunit.xsd"
-         backupGlobals="false"
-         colors="true"
-         bootstrap="tests/bootstrap.php"
-         failOnRisky="true"
-         failOnWarning="true"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+    backupGlobals="false"
+    colors="true"
+    bootstrap="tests/bootstrap.php"
+    failOnRisky="true"
+    failOnWarning="true"
 >
-
+    <coverage>
+        <include>
+            <directory>src</directory>
+        </include>
+    </coverage>
     <testsuites>
         <testsuite name="Fixtures/coverage Test Suite">
             <directory>tests</directory>
         </testsuite>
     </testsuites>
-
-    <filter>
-        <whitelist>
-            <directory>src</directory>
-        </whitelist>
-    </filter>
 </phpunit>
diff --git a/Tests/Fixtures/coverage/tests/CoversDefaultClassTest.php b/Tests/Fixtures/coverage/tests/CoversDefaultClassTest.php
index d764638d..503d675b 100644
--- a/Tests/Fixtures/coverage/tests/CoversDefaultClassTest.php
+++ b/Tests/Fixtures/coverage/tests/CoversDefaultClassTest.php
@@ -9,11 +9,13 @@
  * file that was distributed with this source code.
  */
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 
 /**
  * @coversDefaultClass \DateTime
  */
+#[CoversClass(DateTime::class)]
 class CoversDefaultClassTest extends TestCase
 {
     public function test()
diff --git a/Tests/Fixtures/coverage/tests/CoversNothingTest.php b/Tests/Fixtures/coverage/tests/CoversNothingTest.php
index e60ea97e..8e3cb0a7 100644
--- a/Tests/Fixtures/coverage/tests/CoversNothingTest.php
+++ b/Tests/Fixtures/coverage/tests/CoversNothingTest.php
@@ -9,11 +9,13 @@
  * file that was distributed with this source code.
  */
 
+use PHPUnit\Framework\Attributes\CoversNothing;
 use PHPUnit\Framework\TestCase;
 
 /**
  * @coversNothing
  */
+#[CoversNothing]
 class CoversNothingTest extends TestCase
 {
     public function test()
diff --git a/Tests/Fixtures/coverage/tests/CoversTest.php b/Tests/Fixtures/coverage/tests/CoversTest.php
index f6d34060..67ac74d7 100644
--- a/Tests/Fixtures/coverage/tests/CoversTest.php
+++ b/Tests/Fixtures/coverage/tests/CoversTest.php
@@ -9,13 +9,15 @@
  * file that was distributed with this source code.
  */
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 
+/**
+ * @covers \DateTime
+ */
+#[CoversClass(DateTime::class)]
 class CoversTest extends TestCase
 {
-    /**
-     * @covers \DateTime
-     */
     public function test()
     {
         $this->assertTrue(true);
diff --git a/Tests/Fixtures/symfonyextension/phpunit-with-extension.xml.dist b/Tests/Fixtures/symfonyextension/phpunit-with-extension.xml.dist
new file mode 100644
index 00000000..6e159dcb
--- /dev/null
+++ b/Tests/Fixtures/symfonyextension/phpunit-with-extension.xml.dist
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.3/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="tests/bootstrap.php"
+         failOnRisky="true"
+         failOnWarning="true"
+         cacheDirectory=".phpunit.cache"
+>
+    <testsuites>
+        <testsuite name="Fixtures/symfonyextension Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <source ignoreSuppressionOfDeprecations="true">
+        <include>
+            <directory>src</directory>
+        </include>
+    </source>
+
+    <extensions>
+        <bootstrap class="Symfony\Bridge\PhpUnit\SymfonyExtension">
+            <parameter name="clock-mock-namespaces" value="App" />
+            <parameter name="dns-mock-namespaces" value="App" />
+        </bootstrap>
+    </extensions>
+</phpunit>
diff --git a/Tests/Fixtures/symfonyextension/phpunit-without-extension.xml.dist b/Tests/Fixtures/symfonyextension/phpunit-without-extension.xml.dist
new file mode 100644
index 00000000..843be2fa
--- /dev/null
+++ b/Tests/Fixtures/symfonyextension/phpunit-without-extension.xml.dist
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.3/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="tests/bootstrap.php"
+         failOnRisky="true"
+         failOnWarning="true"
+         cacheDirectory=".phpunit.cache"
+>
+    <testsuites>
+        <testsuite name="Fixtures/symfonyextension Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <source ignoreSuppressionOfDeprecations="true">
+        <include>
+            <directory>src</directory>
+        </include>
+    </source>
+</phpunit>
diff --git a/Tests/Fixtures/symfonyextension/src/ClassExtendingFinalClass.php b/Tests/Fixtures/symfonyextension/src/ClassExtendingFinalClass.php
new file mode 100644
index 00000000..e3377aaf
--- /dev/null
+++ b/Tests/Fixtures/symfonyextension/src/ClassExtendingFinalClass.php
@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src;
+
+class ClassExtendingFinalClass extends FinalClass
+{
+}
diff --git a/Tests/Fixtures/symfonyextension/src/FinalClass.php b/Tests/Fixtures/symfonyextension/src/FinalClass.php
new file mode 100644
index 00000000..8a320dd3
--- /dev/null
+++ b/Tests/Fixtures/symfonyextension/src/FinalClass.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src;
+
+/**
+ * @final
+ */
+class FinalClass
+{
+}
diff --git a/Tests/Fixtures/symfonyextension/tests/bootstrap.php b/Tests/Fixtures/symfonyextension/tests/bootstrap.php
new file mode 100644
index 00000000..385e7ea7
--- /dev/null
+++ b/Tests/Fixtures/symfonyextension/tests/bootstrap.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\ClassExtendingFinalClass;
+use Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\FinalClass;
+
+spl_autoload_register(function ($class) {
+    if (FinalClass::class === $class) {
+        require __DIR__.'/../src/FinalClass.php';
+    } elseif (ClassExtendingFinalClass::class === $class) {
+        require __DIR__.'/../src/ClassExtendingFinalClass.php';
+    }
+});
+
+require __DIR__.'/../../../../SymfonyExtension.php';
+require __DIR__.'/../../../../Attribute/DnsSensitive.php';
+require __DIR__.'/../../../../Attribute/TimeSensitive.php';
+require __DIR__.'/../../../../Extension/EnableClockMockSubscriber.php';
+require __DIR__.'/../../../../Extension/RegisterClockMockSubscriber.php';
+require __DIR__.'/../../../../Extension/RegisterDnsMockSubscriber.php';
+require __DIR__.'/../../../../Metadata/AttributeReader.php';
+
+if (file_exists(__DIR__.'/../../../../vendor/autoload.php')) {
+    require __DIR__.'/../../../../vendor/autoload.php';
+} elseif (file_exists(__DIR__.'/../../../..//../../../../vendor/autoload.php')) {
+    require __DIR__.'/../../../../../../../../vendor/autoload.php';
+}
diff --git a/Tests/Metadata/AttributeReaderTest.php b/Tests/Metadata/AttributeReaderTest.php
new file mode 100644
index 00000000..eb3a7765
--- /dev/null
+++ b/Tests/Metadata/AttributeReaderTest.php
@@ -0,0 +1,95 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests\Metadata;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\Attribute\DnsSensitive;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+use Symfony\Bridge\PhpUnit\Metadata\AttributeReader;
+use Symfony\Bridge\PhpUnit\Tests\Metadata\Fixtures\FooBar;
+
+class AttributeReaderTest extends TestCase
+{
+    /**
+     * @dataProvider provideReadCases
+     */
+    #[DataProvider('provideReadCases')]
+    public function testAttributesAreRead(string $method, string $attributeClass, array $expected)
+    {
+        $reader = new AttributeReader();
+
+        $attributes = $reader->forClassAndMethod(FooBar::class, $method, $attributeClass);
+
+        self::assertContainsOnlyInstancesOf($attributeClass, $attributes);
+        self::assertSame($expected, array_column($attributes, 'class'));
+    }
+
+    public static function provideReadCases(): iterable
+    {
+        yield ['testOne', DnsSensitive::class, [
+            'App\Foo\Bar\A',
+            'App\Foo\Bar\B',
+            'App\Foo\Baz\C',
+        ]];
+        yield ['testTwo', DnsSensitive::class, [
+            'App\Foo\Bar\A',
+            'App\Foo\Bar\B',
+        ]];
+        yield ['testThree', DnsSensitive::class, [
+            'App\Foo\Bar\A',
+            'App\Foo\Bar\B',
+            'App\Foo\Corge\F',
+        ]];
+
+        yield ['testOne', TimeSensitive::class, [
+            'App\Foo\Bar\A',
+        ]];
+        yield ['testTwo', TimeSensitive::class, [
+            'App\Foo\Bar\A',
+            'App\Foo\Qux\D',
+            'App\Foo\Qux\E',
+        ]];
+        yield ['testThree', TimeSensitive::class, [
+            'App\Foo\Bar\A',
+            'App\Foo\Corge\G',
+        ]];
+    }
+
+    public function testAttributesAreCached()
+    {
+        $reader = new AttributeReader();
+        $cacheRef = new \ReflectionProperty(AttributeReader::class, 'cache');
+
+        self::assertSame([], $cacheRef->getValue($reader));
+
+        $reader->forClass(FooBar::class, TimeSensitive::class);
+
+        self::assertCount(1, $cache = $cacheRef->getValue($reader));
+        self::assertArrayHasKey(FooBar::class, $cache);
+        self::assertAttributesCount($cache[FooBar::class], 2, 1);
+
+        $reader->forMethod(FooBar::class, 'testThree', DnsSensitive::class);
+
+        self::assertCount(2, $cache = $cacheRef->getValue($reader));
+        self::assertArrayHasKey($key = FooBar::class.'::testThree', $cache);
+        self::assertAttributesCount($cache[$key], 1, 1);
+    }
+
+    private static function assertAttributesCount(array $attributes, int $expectedDnsCount, int $expectedTimeCount): void
+    {
+        self::assertArrayHasKey(DnsSensitive::class, $attributes);
+        self::assertCount($expectedDnsCount, $attributes[DnsSensitive::class]);
+        self::assertArrayHasKey(TimeSensitive::class, $attributes);
+        self::assertCount($expectedTimeCount, $attributes[TimeSensitive::class]);
+    }
+}
diff --git a/Tests/Metadata/Fixtures/FooBar.php b/Tests/Metadata/Fixtures/FooBar.php
new file mode 100644
index 00000000..63b9d28d
--- /dev/null
+++ b/Tests/Metadata/Fixtures/FooBar.php
@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests\Metadata\Fixtures;
+
+use Symfony\Bridge\PhpUnit\Attribute\DnsSensitive;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+
+#[DnsSensitive('App\Foo\Bar\A')]
+#[DnsSensitive('App\Foo\Bar\B')]
+#[TimeSensitive('App\Foo\Bar\A')]
+final class FooBar
+{
+    #[DnsSensitive('App\Foo\Baz\C')]
+    public function testOne()
+    {
+    }
+
+    #[TimeSensitive('App\Foo\Qux\D')]
+    #[TimeSensitive('App\Foo\Qux\E')]
+    public function testTwo()
+    {
+    }
+
+    #[DnsSensitive('App\Foo\Corge\F')]
+    #[TimeSensitive('App\Foo\Corge\G')]
+    public function testThree()
+    {
+    }
+}
diff --git a/Tests/OnlyExpectingDeprecationSkippedTest.php b/Tests/OnlyExpectingDeprecationSkippedTest.php
index 593e0b4e..aede756a 100644
--- a/Tests/OnlyExpectingDeprecationSkippedTest.php
+++ b/Tests/OnlyExpectingDeprecationSkippedTest.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpExtension;
 use PHPUnit\Framework\TestCase;
 
 /**
@@ -18,6 +20,7 @@
  *
  * @requires extension ext-dummy
  */
+#[RequiresPhpExtension('ext-dummy')]
 final class OnlyExpectingDeprecationSkippedTest extends TestCase
 {
     /**
@@ -27,6 +30,7 @@ final class OnlyExpectingDeprecationSkippedTest extends TestCase
      *
      * @expectedDeprecation unreachable
      */
+    #[Group('legacy')]
     public function testExpectingOnlyDeprecations()
     {
         $this->fail('should never be ran.');
diff --git a/Tests/ProcessIsolationTest.php b/Tests/ProcessIsolationTest.php
index 04bf6ec8..d86e2db6 100644
--- a/Tests/ProcessIsolationTest.php
+++ b/Tests/ProcessIsolationTest.php
@@ -11,6 +11,9 @@
 
 namespace Symfony\Bridge\PhpUnit\Tests;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RequiresPhpunit;
+use PHPUnit\Framework\Exception;
 use PHPUnit\Framework\TestCase;
 
 /**
@@ -20,6 +23,8 @@
  *
  * @runTestsInSeparateProcesses
  */
+#[RequiresPhpunit('<10')]
+#[Group('legacy')]
 class ProcessIsolationTest extends TestCase
 {
     /**
@@ -33,7 +38,7 @@ public function testIsolation()
 
     public function testCallingOtherErrorHandler()
     {
-        $this->expectException(\PHPUnit\Framework\Exception::class);
+        $this->expectException(Exception::class);
         $this->expectExceptionMessage('Test that PHPUnit\'s error handler fires.');
 
         trigger_error('Test that PHPUnit\'s error handler fires.', \E_USER_WARNING);
diff --git a/Tests/SymfonyExtension.php b/Tests/SymfonyExtension.php
new file mode 100644
index 00000000..1219c27b
--- /dev/null
+++ b/Tests/SymfonyExtension.php
@@ -0,0 +1,161 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\Attribute\DnsSensitive;
+use Symfony\Bridge\PhpUnit\Attribute\TimeSensitive;
+use Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\ClassExtendingFinalClass;
+use Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\FinalClass;
+
+#[DnsSensitive('App\Foo\A')]
+#[TimeSensitive('App\Foo\A')]
+class SymfonyExtension extends TestCase
+{
+    public function testExtensionOfFinalClass()
+    {
+        $this->expectUserDeprecationMessage(\sprintf('The "%s" class is considered final. It may change without further notice as of its next major version. You should not extend it from "%s".', FinalClass::class, ClassExtendingFinalClass::class));
+
+        new ClassExtendingFinalClass();
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testTimeMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\time', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testMicrotimeMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\microtime', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testSleepMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\sleep', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testUsleepMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\usleep', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testDateMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\date', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testGmdateMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\gmdate', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('time-sensitive')]
+    #[TimeSensitive('App\Bar\B')]
+    public function testHrtimeMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\hrtime', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testCheckdnsrrMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\checkdnsrr', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testDnsCheckRecordMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\dns_check_record', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testGetmxrrMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\getmxrr', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testDnsGetMxMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\dns_get_mx', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testGethostbyaddrMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\gethostbyaddr', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testGethostbynameMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\gethostbyname', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testGethostbynamelMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\gethostbynamel', $namespace)));
+    }
+
+    #[DataProvider('mockedNamespaces')]
+    #[Group('dns-sensitive')]
+    #[DnsSensitive('App\Bar\B')]
+    public function testDnsGetRecordMockIsRegistered(string $namespace)
+    {
+        $this->assertTrue(\function_exists(\sprintf('%s\dns_get_record', $namespace)));
+    }
+
+    public static function mockedNamespaces(): iterable
+    {
+        yield 'test class namespace' => [__NAMESPACE__];
+        yield 'namespace derived from test namespace' => ['Symfony\Bridge\PhpUnit'];
+        yield 'explicitly configured namespace' => ['App'];
+        yield 'explicitly configured namespace through attribute on class' => ['App\Foo'];
+        yield 'explicitly configured namespace through attribute on method' => ['App\Bar'];
+    }
+}
diff --git a/Tests/SymfonyExtensionWithManualRegister.php b/Tests/SymfonyExtensionWithManualRegister.php
new file mode 100644
index 00000000..c02d6f1c
--- /dev/null
+++ b/Tests/SymfonyExtensionWithManualRegister.php
@@ -0,0 +1,64 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ClockMock;
+use Symfony\Bridge\PhpUnit\DnsMock;
+
+class SymfonyExtensionWithManualRegister extends TestCase
+{
+    public static function setUpBeforeClass(): void
+    {
+        ClockMock::register(self::class);
+        ClockMock::withClockMock(strtotime('2024-05-20 15:30:00'));
+
+        DnsMock::register(self::class);
+        DnsMock::withMockedHosts([
+            'example.com' => [
+                ['type' => 'A', 'ip' => '1.2.3.4'],
+            ],
+        ]);
+    }
+
+    public static function tearDownAfterClass(): void
+    {
+        ClockMock::withClockMock(false);
+        DnsMock::withMockedHosts([]);
+    }
+
+    public function testDate()
+    {
+        self::assertSame('2024-05-20 15:30:00', date('Y-m-d H:i:s'));
+    }
+
+    public function testGetHostByName()
+    {
+        self::assertSame('1.2.3.4', gethostbyname('example.com'));
+    }
+
+    public function testTime()
+    {
+        self::assertSame(1716219000, time());
+    }
+
+    public function testDnsGetRecord()
+    {
+        self::assertSame([[
+            'host' => 'example.com',
+            'class' => 'IN',
+            'ttl' => 1,
+            'type' => 'A',
+            'ip' => '1.2.3.4',
+        ]], dns_get_record('example.com'));
+    }
+}
diff --git a/Tests/expectdeprecationfail.phpt b/Tests/expectdeprecationfail.phpt
index f968cd18..be302235 100644
--- a/Tests/expectdeprecationfail.phpt
+++ b/Tests/expectdeprecationfail.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Test ExpectDeprecationTrait failing tests
+--SKIPIF--
+<?php if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10.0', '>=')) echo 'Skipping on PHPUnit 10+';
 --FILE--
 <?php
 $test =  realpath(__DIR__.'/FailTests/ExpectDeprecationTraitTestFail.php');
diff --git a/Tests/expectnotrisky.phpt b/Tests/expectnotrisky.phpt
index 2005adf2..aae98028 100644
--- a/Tests/expectnotrisky.phpt
+++ b/Tests/expectnotrisky.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test NoAssertionsTestNotRisky not risky test
 --SKIPIF--
-<?php if ('\\' === DIRECTORY_SEPARATOR && !extension_loaded('mbstring')) die('Skipping on Windows without mbstring');
+<?php
+if ('\\' === DIRECTORY_SEPARATOR && !extension_loaded('mbstring')) echo 'Skipping on Windows without mbstring';
+if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10.0', '>=')) echo 'Skipping on PHPUnit 10+';
 --FILE--
 <?php
 $test =  realpath(__DIR__.'/FailTests/NoAssertionsTestNotRisky.php');
diff --git a/Tests/expectrisky.phpt b/Tests/expectrisky.phpt
index 91e08305..6762255c 100644
--- a/Tests/expectrisky.phpt
+++ b/Tests/expectrisky.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test NoAssertionsTestRisky risky test
 --SKIPIF--
-<?php if ('\\' === DIRECTORY_SEPARATOR && !extension_loaded('mbstring')) die('Skipping on Windows without mbstring');
+<?php
+if ('\\' === DIRECTORY_SEPARATOR && !extension_loaded('mbstring')) echo 'Skipping on Windows without mbstring';
+if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10.0', '>=')) echo 'Skipping on PHPUnit 10+';
 --FILE--
 <?php
 $test =  realpath(__DIR__.'/FailTests/NoAssertionsTestRisky.php');
diff --git a/Tests/symfonyextension.phpt b/Tests/symfonyextension.phpt
new file mode 100644
index 00000000..dd26388e
--- /dev/null
+++ b/Tests/symfonyextension.phpt
@@ -0,0 +1,33 @@
+--TEST--
+--SKIPIF--
+<?php
+if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10', '<')) echo 'Skipping on PHPUnit < 10';
+--FILE--
+<?php
+passthru(\sprintf('NO_COLOR=1 php %s/simple-phpunit.php -c %s/Fixtures/symfonyextension/phpunit-with-extension.xml.dist %s/SymfonyExtension.php', getenv('SYMFONY_SIMPLE_PHPUNIT_BIN_DIR'), __DIR__, __DIR__));
+echo PHP_EOL;
+passthru(\sprintf('NO_COLOR=1 php %s/simple-phpunit.php -c %s/Fixtures/symfonyextension/phpunit-with-extension.xml.dist %s/SymfonyExtensionWithManualRegister.php', getenv('SYMFONY_SIMPLE_PHPUNIT_BIN_DIR'), __DIR__, __DIR__));
+--EXPECTF--
+PHPUnit %s
+
+Runtime:       PHP %s
+Configuration: %s/src/Symfony/Bridge/PhpUnit/Tests/Fixtures/symfonyextension/phpunit-with-extension.xml.dist
+
+D................................................................ 65 / 76 ( 85%)
+...........                                                       76 / 76 (100%)
+
+Time: %s, Memory: %s
+
+OK, but there were issues!
+Tests: 76, Assertions: 76, Deprecations: 1.
+
+PHPUnit %s
+
+Runtime:       PHP %s
+Configuration: %s/src/Symfony/Bridge/PhpUnit/Tests/Fixtures/symfonyextension/phpunit-with-extension.xml.dist
+
+....                                                                4 / 4 (100%)
+
+Time: %s, Memory: %s
+
+OK (4 tests, 4 assertions)
diff --git a/Tests/symfonyextensionnotregistered.phpt b/Tests/symfonyextensionnotregistered.phpt
new file mode 100644
index 00000000..0a140770
--- /dev/null
+++ b/Tests/symfonyextensionnotregistered.phpt
@@ -0,0 +1,477 @@
+--TEST--
+--SKIPIF--
+<?php
+if (!getenv('SYMFONY_PHPUNIT_VERSION') || version_compare(getenv('SYMFONY_PHPUNIT_VERSION'), '10', '<')) echo 'Skipping on PHPUnit < 10';
+--FILE--
+<?php
+passthru(\sprintf('NO_COLOR=1 php %s/simple-phpunit.php -c %s/Fixtures/symfonyextension/phpunit-without-extension.xml.dist %s/SymfonyExtension.php', getenv('SYMFONY_SIMPLE_PHPUNIT_BIN_DIR'), __DIR__, __DIR__));
+--EXPECTF--
+PHPUnit %s
+
+Runtime:       PHP %s
+Configuration: %s/src/Symfony/Bridge/PhpUnit/Tests/Fixtures/symfonyextension/phpunit-without-extension.xml.dist
+
+FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF 65 / 76 ( 85%)
+FFFFFFFFFFF                                                       76 / 76 (100%)
+
+Time: %s, Memory: %s
+
+There were 76 failures:
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testExtensionOfFinalClass
+Expected deprecation with message "The "Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\FinalClass" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Symfony\Bridge\PhpUnit\Tests\Fixtures\symfonyextension\src\ClassExtendingFinalClass"." was not triggered
+
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testTimeMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testTimeMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testTimeMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testTimeMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testTimeMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testMicrotimeMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testMicrotimeMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testMicrotimeMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testMicrotimeMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testMicrotimeMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testSleepMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testSleepMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testSleepMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testSleepMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testSleepMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testUsleepMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testUsleepMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testUsleepMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testUsleepMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testUsleepMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDateMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDateMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDateMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDateMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDateMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGmdateMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGmdateMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGmdateMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGmdateMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGmdateMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testHrtimeMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testHrtimeMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testHrtimeMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testHrtimeMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testHrtimeMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testCheckdnsrrMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testCheckdnsrrMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testCheckdnsrrMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testCheckdnsrrMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testCheckdnsrrMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsCheckRecordMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsCheckRecordMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsCheckRecordMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsCheckRecordMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsCheckRecordMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGetmxrrMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGetmxrrMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGetmxrrMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGetmxrrMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGetmxrrMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetMxMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetMxMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetMxMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetMxMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetMxMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbyaddrMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbyaddrMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbyaddrMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbyaddrMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbyaddrMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynameMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynameMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynameMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynameMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynameMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynamelMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynamelMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynamelMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynamelMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testGethostbynamelMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetRecordMockIsRegistered%stest class namespace%s ('Symfony\Bridge\PhpUnit\Tests')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetRecordMockIsRegistered%snamespace derived from test namespace%s ('Symfony\Bridge\PhpUnit')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetRecordMockIsRegistered%sexplicitly configured namespace%s ('App')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetRecordMockIsRegistered%sexplicitly configured namespace through attribute on class%s ('App\Foo')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+%d) Symfony\Bridge\PhpUnit\Tests\SymfonyExtension::testDnsGetRecordMockIsRegistered%sexplicitly configured namespace through attribute on method%s ('App\Bar')
+Failed asserting that false is true.
+
+%s/src/Symfony/Bridge/PhpUnit/Tests/SymfonyExtension.php:%d
+%s/.phpunit/phpunit-%s/phpunit:%d
+
+FAILURES!
+Tests: 76, Assertions: 76, Failures: 76.
diff --git a/TextUI/Command.php b/TextUI/Command.php
index 3cc158f6..9cf7b8f2 100644
--- a/TextUI/Command.php
+++ b/TextUI/Command.php
@@ -12,7 +12,7 @@
 namespace Symfony\Bridge\PhpUnit\TextUI;
 
 if (version_compare(\PHPUnit\Runner\Version::id(), '9.0.0', '<')) {
-    class_alias('Symfony\Bridge\PhpUnit\Legacy\CommandForV7', 'Symfony\Bridge\PhpUnit\TextUI\Command');
+    class_alias('Symfony\Bridge\PhpUnit\Legacy\CommandForV8', 'Symfony\Bridge\PhpUnit\TextUI\Command');
 } else {
     class_alias('Symfony\Bridge\PhpUnit\Legacy\CommandForV9', 'Symfony\Bridge\PhpUnit\TextUI\Command');
 }
diff --git a/bin/simple-phpunit.php b/bin/simple-phpunit.php
index c6b162d0..f6262866 100644
--- a/bin/simple-phpunit.php
+++ b/bin/simple-phpunit.php
@@ -57,7 +57,7 @@
                 break;
             }
             // short option
-            if (0 === strpos($cliArgument, '-c')) {
+            if (str_starts_with($cliArgument, '-c')) {
                 if ('-c' === $cliArgument && array_key_exists($cliArgumentIndex + 1, $argv)) {
                     $phpunitConfigFilename = $getPhpUnitConfig($argv[$cliArgumentIndex + 1]);
                 } else {
@@ -97,13 +97,7 @@
     }
 };
 
-if (\PHP_VERSION_ID >= 80000) {
-    $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '9.6') ?: '9.6';
-} elseif (\PHP_VERSION_ID >= 70200) {
-    $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '8.5') ?: '8.5';
-} else {
-    $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '7.5') ?: '7.5';
-}
+$PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '9.6') ?: '9.6';
 
 $MAX_PHPUNIT_VERSION = $getEnvVar('SYMFONY_MAX_PHPUNIT_VERSION', false);
 
@@ -111,6 +105,11 @@
     $PHPUNIT_VERSION = $MAX_PHPUNIT_VERSION;
 }
 
+if (version_compare($PHPUNIT_VERSION, '10.0', '>=') && version_compare($PHPUNIT_VERSION, '11.0', '<')) {
+    fwrite(\STDERR, 'This script does not work with PHPUnit 10.'.\PHP_EOL);
+    exit(1);
+}
+
 $PHPUNIT_REMOVE_RETURN_TYPEHINT = filter_var($getEnvVar('SYMFONY_PHPUNIT_REMOVE_RETURN_TYPEHINT', '0'), \FILTER_VALIDATE_BOOLEAN);
 
 $COMPOSER_JSON = getenv('COMPOSER') ?: 'composer.json';
@@ -146,7 +145,7 @@
     }
 }
 
-if ('disabled' === $getEnvVar('SYMFONY_DEPRECATIONS_HELPER')) {
+if ('disabled' === $getEnvVar('SYMFONY_DEPRECATIONS_HELPER') || version_compare($PHPUNIT_VERSION, '11.0', '>=')) {
     putenv('SYMFONY_DEPRECATIONS_HELPER=disabled');
 }
 
@@ -166,7 +165,7 @@
 $prevCacheDir = getenv('COMPOSER_CACHE_DIR');
 if ($prevCacheDir) {
     if (false === $absoluteCacheDir = realpath($prevCacheDir)) {
-        @mkdir($prevCacheDir, 0777, true);
+        @mkdir($prevCacheDir, 0o777, true);
         $absoluteCacheDir = realpath($prevCacheDir);
     }
     if ($absoluteCacheDir) {
@@ -175,14 +174,14 @@
         $prevCacheDir = false;
     }
 }
-$SYMFONY_PHPUNIT_REMOVE = $getEnvVar('SYMFONY_PHPUNIT_REMOVE', 'phpspec/prophecy'.($PHPUNIT_VERSION < 6.0 ? ' symfony/yaml' : ''));
+$SYMFONY_PHPUNIT_REMOVE = $getEnvVar('SYMFONY_PHPUNIT_REMOVE', 'phpspec/prophecy');
 $SYMFONY_PHPUNIT_REQUIRE = $getEnvVar('SYMFONY_PHPUNIT_REQUIRE', '');
 $configurationHash = md5(implode(\PHP_EOL, [md5_file(__FILE__), $SYMFONY_PHPUNIT_REMOVE, $SYMFONY_PHPUNIT_REQUIRE, (int) $PHPUNIT_REMOVE_RETURN_TYPEHINT]));
 $PHPUNIT_VERSION_DIR = sprintf('phpunit-%s-%d', $PHPUNIT_VERSION, $PHPUNIT_REMOVE_RETURN_TYPEHINT);
 if (!file_exists("$PHPUNIT_DIR/$PHPUNIT_VERSION_DIR/phpunit") || $configurationHash !== @file_get_contents("$PHPUNIT_DIR/.$PHPUNIT_VERSION_DIR.md5")) {
     // Build a standalone phpunit without symfony/yaml nor prophecy by default
 
-    @mkdir($PHPUNIT_DIR, 0777, true);
+    @mkdir($PHPUNIT_DIR, 0o777, true);
     chdir($PHPUNIT_DIR);
     if (file_exists("$PHPUNIT_VERSION_DIR")) {
         passthru(sprintf('\\' === \DIRECTORY_SEPARATOR ? 'rmdir /S /Q %s 2> NUL' : 'rm -rf %s', escapeshellarg("$PHPUNIT_VERSION_DIR.old")));
@@ -237,9 +236,6 @@
     if ($SYMFONY_PHPUNIT_REQUIRE) {
         $passthruOrFail("$COMPOSER require --no-update ".$SYMFONY_PHPUNIT_REQUIRE);
     }
-    if (5.1 <= $PHPUNIT_VERSION && $PHPUNIT_VERSION < 5.4) {
-        $passthruOrFail("$COMPOSER require --no-update phpunit/phpunit-mock-objects \"~3.1.0\"");
-    }
 
     if (preg_match('{\^((\d++\.)\d++)[\d\.]*$}', $info['requires']['php'], $phpVersion) && version_compare($phpVersion[2].'99', \PHP_VERSION, '<')) {
         $passthruOrFail("$COMPOSER config platform.php \"$phpVersion[1].99\"");
@@ -264,9 +260,8 @@
     }
     $prevRoot = getenv('COMPOSER_ROOT_VERSION');
     putenv("COMPOSER_ROOT_VERSION=$PHPUNIT_VERSION.99");
-    $q = '\\' === \DIRECTORY_SEPARATOR && \PHP_VERSION_ID < 80000 ? '"' : '';
     // --no-suggest is not in the list to keep compat with composer 1.0, which is shipped with Ubuntu 16.04LTS
-    $exit = proc_close(proc_open("$q$COMPOSER update --no-dev --prefer-dist --no-progress $q", [], $p, getcwd()));
+    $exit = proc_close(proc_open("$COMPOSER update --no-dev --prefer-dist --no-progress", [], $p, getcwd()));
     putenv('COMPOSER_ROOT_VERSION'.(false !== $prevRoot ? '='.$prevRoot : ''));
     if ($prevCacheDir) {
         putenv("COMPOSER_CACHE_DIR=$prevCacheDir");
@@ -276,44 +271,45 @@
     }
 
     // Mutate TestCase code
-    $alteredCode = file_get_contents($alteredFile = './src/Framework/TestCase.php');
-    if ($PHPUNIT_REMOVE_RETURN_TYPEHINT) {
-        $alteredCode = preg_replace('/^    ((?:protected|public)(?: static)? function \w+\(\)): void/m', '    $1', $alteredCode);
-    }
-    $alteredCode = preg_replace('/abstract class TestCase[^\{]+\{/', '$0 '.\PHP_EOL."    use \Symfony\Bridge\PhpUnit\Legacy\PolyfillTestCaseTrait;", $alteredCode, 1);
-    file_put_contents($alteredFile, $alteredCode);
+    if (version_compare($PHPUNIT_VERSION, '11.0', '<')) {
+        $alteredCode = file_get_contents($alteredFile = './src/Framework/TestCase.php');
+        if ($PHPUNIT_REMOVE_RETURN_TYPEHINT) {
+            $alteredCode = preg_replace('/^    ((?:protected|public)(?: static)? function \w+\(\)): void/m', '    $1', $alteredCode);
+        }
 
-    // Mutate Assert code
-    $alteredCode = file_get_contents($alteredFile = './src/Framework/Assert.php');
-    $alteredCode = preg_replace('/abstract class Assert[^\{]+\{/', '$0 '.\PHP_EOL."    use \Symfony\Bridge\PhpUnit\Legacy\PolyfillAssertTrait;", $alteredCode, 1);
-    file_put_contents($alteredFile, $alteredCode);
+        // Mutate Assert code
+        $alteredCode = file_get_contents($alteredFile = './src/Framework/Assert.php');
+        $alteredCode = preg_replace('/abstract class Assert[^\{]+\{/', '$0 '.\PHP_EOL."    use \Symfony\Bridge\PhpUnit\Legacy\PolyfillAssertTrait;", $alteredCode, 1);
+        file_put_contents($alteredFile, $alteredCode);
 
-    file_put_contents('phpunit', <<<'EOPHP'
-<?php
+        file_put_contents('phpunit', <<<'EOPHP'
+            <?php
 
-define('PHPUNIT_COMPOSER_INSTALL', __DIR__.'/vendor/autoload.php');
-require PHPUNIT_COMPOSER_INSTALL;
+            define('PHPUNIT_COMPOSER_INSTALL', __DIR__.'/vendor/autoload.php');
+            require PHPUNIT_COMPOSER_INSTALL;
 
-if (!class_exists(\SymfonyExcludeListPhpunit::class, false)) {
-    class SymfonyExcludeListPhpunit {}
-}
-if (method_exists(\PHPUnit\Util\ExcludeList::class, 'addDirectory')) {
-    (new PHPUnit\Util\Excludelist())->getExcludedDirectories();
-    PHPUnit\Util\ExcludeList::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListPhpunit::class))->getFileName()));
-    class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\ExcludeList::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListSimplePhpunit::class))->getFileName()));
-} elseif (method_exists(\PHPUnit\Util\Blacklist::class, 'addDirectory')) {
-    (new PHPUnit\Util\BlackList())->getBlacklistedDirectories();
-    PHPUnit\Util\Blacklist::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListPhpunit::class))->getFileName()));
-    class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\Blacklist::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListSimplePhpunit::class))->getFileName()));
-} else {
-    PHPUnit\Util\Blacklist::$blacklistedClassNames['SymfonyExcludeListPhpunit'] = 1;
-    PHPUnit\Util\Blacklist::$blacklistedClassNames['SymfonyExcludeListSimplePhpunit'] = 1;
-}
+            if (!class_exists(\SymfonyExcludeListPhpunit::class, false)) {
+                class SymfonyExcludeListPhpunit {}
+            }
+            if (method_exists(\PHPUnit\Util\ExcludeList::class, 'addDirectory')) {
+                (new PHPUnit\Util\Excludelist())->getExcludedDirectories();
+                PHPUnit\Util\ExcludeList::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListPhpunit::class))->getFileName()));
+                class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\ExcludeList::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListSimplePhpunit::class))->getFileName()));
+            } elseif (method_exists(\PHPUnit\Util\Blacklist::class, 'addDirectory')) {
+                (new PHPUnit\Util\BlackList())->getBlacklistedDirectories();
+                PHPUnit\Util\Blacklist::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListPhpunit::class))->getFileName()));
+                class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\Blacklist::addDirectory(\dirname((new \ReflectionClass(\SymfonyExcludeListSimplePhpunit::class))->getFileName()));
+            } else {
+                PHPUnit\Util\Blacklist::$blacklistedClassNames['SymfonyExcludeListPhpunit'] = 1;
+                PHPUnit\Util\Blacklist::$blacklistedClassNames['SymfonyExcludeListSimplePhpunit'] = 1;
+            }
 
-Symfony\Bridge\PhpUnit\TextUI\Command::main();
+            Symfony\Bridge\PhpUnit\TextUI\Command::main();
+
+            EOPHP
+        );
+    }
 
-EOPHP
-    );
     chdir('..');
     file_put_contents(".$PHPUNIT_VERSION_DIR.md5", $configurationHash);
     chdir($oldPwd);
@@ -334,16 +330,7 @@ class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\Bla
 }
 chdir($oldPwd);
 
-if ($PHPUNIT_VERSION < 8.0) {
-    $argv = array_filter($argv, function ($v) use (&$argc) {
-        if ('--do-not-cache-result' !== $v) {
-            return true;
-        }
-        --$argc;
-
-        return false;
-    });
-} elseif (filter_var(getenv('SYMFONY_PHPUNIT_DISABLE_RESULT_CACHE'), \FILTER_VALIDATE_BOOLEAN)) {
+if (filter_var(getenv('SYMFONY_PHPUNIT_DISABLE_RESULT_CACHE'), \FILTER_VALIDATE_BOOLEAN)) {
     $argv[] = '--do-not-cache-result';
     ++$argc;
 }
@@ -381,6 +368,10 @@ class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\Bla
     $cmd .= '%2$s';
 }
 
+if (version_compare($PHPUNIT_VERSION, '11.0', '>=')) {
+    $GLOBALS['_composer_autoload_path'] = "$PHPUNIT_DIR/$PHPUNIT_VERSION_DIR/vendor/autoload.php";
+}
+
 if ($components) {
     $skippedTests = $_SERVER['SYMFONY_PHPUNIT_SKIPPED_TESTS'] ?? false;
     $runningProcs = [];
@@ -457,7 +448,7 @@ class_exists(\SymfonyExcludeListSimplePhpunit::class, false) && PHPUnit\Util\Bla
         }
     }
 } elseif (!isset($argv[1]) || 'install' !== $argv[1] || file_exists('install')) {
-    if (!class_exists(\SymfonyExcludeListSimplePhpunit::class, false)) {
+    if (!class_exists(SymfonyExcludeListSimplePhpunit::class, false)) {
         class SymfonyExcludeListSimplePhpunit
         {
         }
diff --git a/bootstrap.php b/bootstrap.php
index f11b7ab7..5191beff 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -9,10 +9,14 @@
  * file that was distributed with this source code.
  */
 
-use Doctrine\Common\Annotations\AnnotationRegistry;
 use Doctrine\Deprecations\Deprecation;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler;
 
+// Skip if we're using PHPUnit >=10
+if (class_exists(PHPUnit\Metadata\Metadata::class)) {
+    return;
+}
+
 // Detect if we need to serialize deprecations to a file.
 if (in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && $file = getenv('SYMFONY_DEPRECATIONS_SERIALIZE')) {
     DeprecationErrorHandler::collectDeprecations($file);
@@ -21,7 +25,7 @@
 }
 
 // Detect if we're loaded by an actual run of phpunit
-if (!defined('PHPUNIT_COMPOSER_INSTALL') && !class_exists(\PHPUnit\TextUI\Command::class, false)) {
+if (!defined('PHPUNIT_COMPOSER_INSTALL') && !class_exists(PHPUnit\TextUI\Command::class, false)) {
     return;
 }
 
@@ -31,19 +35,6 @@
 
 if (class_exists(Deprecation::class)) {
     Deprecation::withoutDeduplication();
-
-    if (\PHP_VERSION_ID < 80000) {
-        // Ignore deprecations about the annotation mapping driver when it's not possible to move to the attribute driver yet
-        Deprecation::ignoreDeprecations('https://github.com/doctrine/orm/issues/10098');
-    }
-}
-
-if (!class_exists(AnnotationRegistry::class, false) && class_exists(AnnotationRegistry::class)) {
-    if (method_exists(AnnotationRegistry::class, 'registerUniqueLoader')) {
-        AnnotationRegistry::registerUniqueLoader('class_exists');
-    } elseif (method_exists(AnnotationRegistry::class, 'registerLoader')) {
-        AnnotationRegistry::registerLoader('class_exists');
-    }
 }
 
 if ('disabled' !== getenv('SYMFONY_DEPRECATIONS_HELPER')) {
diff --git a/composer.json b/composer.json
index a42c737f..d1e6c3ba 100644
--- a/composer.json
+++ b/composer.json
@@ -18,17 +18,13 @@
         }
     ],
     "require": {
-        "php": ">=7.1.3 EVEN ON LATEST SYMFONY VERSIONS TO ALLOW USING",
+        "php": ">=8.1.0 EVEN ON LATEST SYMFONY VERSIONS TO ALLOW USING",
         "php": "THIS BRIDGE WHEN TESTING LOWEST SYMFONY VERSIONS.",
-        "php": ">=7.1.3"
+        "php": ">=8.1.0"
     },
     "require-dev": {
-        "symfony/deprecation-contracts": "^2.5|^3.0",
-        "symfony/error-handler": "^5.4|^6.0|^7.0",
-        "symfony/polyfill-php81": "^1.27"
-    },
-    "conflict": {
-        "phpunit/phpunit": "<7.5|9.1.2"
+        "symfony/deprecation-contracts": "^2.5|^3",
+        "symfony/error-handler": "^6.4.3|^7.0.3|^8.0"
     },
     "autoload": {
         "files": [ "bootstrap.php" ],
diff --git a/phpunit-9.6.xml.dist b/phpunit-9.6.xml.dist
new file mode 100644
index 00000000..6f9542e1
--- /dev/null
+++ b/phpunit-9.6.xml.dist
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Symfony PHPUnit Bridge Test Suite">
+            <directory>./Tests/</directory>
+            <directory suffix=".phpt">./Tests/DeprecationErrorHandler/</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage>
+        <include>
+            <directory>./</directory>
+        </include>
+        <exclude>
+            <directory>./Tests</directory>
+            <directory>./vendor</directory>
+        </exclude>
+    </coverage>
+</phpunit>
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index cde576e2..7e310594 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/9.3/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.3/phpunit.xsd"
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnDeprecation="true"
          failOnRisky="true"
          failOnWarning="true"
 >
@@ -19,7 +20,7 @@
         </testsuite>
     </testsuites>
 
-    <coverage>
+    <source ignoreSuppressionOfDeprecations="true">
         <include>
             <directory>./</directory>
         </include>
@@ -27,5 +28,5 @@
             <directory>./Tests</directory>
             <directory>./vendor</directory>
         </exclude>
-    </coverage>
+    </source>
 </phpunit>