Recently I started a project in Symfony2 from the BETA version available on symfony.com

After a while, I needed to upgrade to the master branch, so I retrieved the latest from github and switched it in vendor/symfony.

However, my bootstrap.php.cache and bootstrap\_cache.php.cache are not upgraded, which has generated errors. 

I tried clearing the symfony cache, to no avail.

How can I update these files to correspond to my project?