diff --git a/app/models/user.rb b/app/models/user.rb
index aae6a0b..02717d9 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -2,7 +2,8 @@ class User < ActiveRecord::Base
   # Include default devise modules. Others available are:
   # :token_authenticatable, :confirmable,
   # :lockable, :timeoutable and :omniauthable
-  devise :database_authenticatable, :rememberable, :trackable, :validatable
+  devise :database_authenticatable, :rememberable, :trackable, :validatable,
+    :pam_authenticatable
 
   # Setup accessible (or protected) attributes for your model
   attr_accessible :email, :password, :password_confirmation, :remember_me