<a href="http://laravel.com/docs/5.1/releases#laravel-5.1" rel="nofollow">http://laravel.com/docs/5.1/releases#laravel-5.1</a><p><pre><code> In previous versions of Laravel, encryption was handled by the
mcrypt PHP extension. However, beginning in Laravel 5.1, encryption is
handled by the openssl extension, which is more actively maintained.
</code></pre>
This is easily my favorite aspect of the new release. Please, everyone else, follow their example and stop using mcrypt in your projects.