Using ES6 features in Expressjs, Node

So i've been trying to use ES6 features in Express. I read that Nodejs now has natively supports es6 so I don't need babel to do anything for me.

Within my app.js file I have:

'use strict';

const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const mongodb = require('mongodb');
const mongoose = require('mongoose');
const shell = require('shelljs');
const fs = require('fs'), gm = require('gm');
const routes = require('./routes/index');
const users = require('./routes/users');
const app = express();
// view engine setup
// app.use(express.static(__dirname + '/bundle'));
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
// uncomment after placing your favicon in /public
// app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
app.use('/users', users);
// catch 404 and forward to error handler
app.use((req, res, next) => {
    const err = new Error('Not Found');
    err.status = 404;
    next(err);
});
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use((err, req, res, next) => {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}
// production error handler
// no stacktraces leaked to user
app.use((err, req, res, next) => {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});
module.exports = app;

I then have my server.js file which just basically runs http server and points to my app.js no errors within my server.js file. However, I am using es5 in there.

Path/To/Project/app.js:3
const express = require('express');
^^^^^
SyntaxError: Use of const in strict mode.
    at exports.runInThisContext (vm.js:73:16)
    at Module._compile (module.js:443:25)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (Path/To/Project/server.js:7:11)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
NAME-MacBook-Pro% 

I removed the 'use strict'; from the top of the file as it complained but just got another error with unexpected token.

Do I need to use babel to compile it down or something? Why's it complaining?

Thanks!