LdapBundle error with symfony version 2

I am using LdapBundle

. I already installed it but I catch the error:

Fatal error: Call to undefined method Symfony\Bundle\SecurityBundle\DependencyInjection\SecurityExtension::addSecurityListenerFactory()

in C: \ wamp \ www \ trainingboard \ src \ IMAG \ LdapBundle \ IMAGLdapBundle.php on line 41

I know that I need to change the Symfony version to 2.1. I tried to change the Symfony folder in the vendors, but after that I caught another error. So, I can't change Symfony so easily. Can you give me some advice on what to do?

PS Now I am using 2.0.9 version of Symfony