When using pbkdf2 or bcrypt length 40 is not enough

I used this entity to apply bcrypt encoded password but I was not able to login. It took me 2 days to debug that the password is being truncated because column length is less than the password which is being generated by bcrypt or pbkdf2.

Author: manindersingh

cookbook/security/entity_provider.rst

@@ -83,7 +83,7 @@ focus on the most important methods that come from the
         private $salt;
 
         /**
-         * @ORM\Column(type="string", length=40)
+         * @ORM\Column(type="string", length=64)
          */
         private $password;