diff --git a/app/models/authorization.rb b/app/models/authorization.rb
index 9e9b1f0c9..739eae3a9 100644
--- a/app/models/authorization.rb
+++ b/app/models/authorization.rb
@@ -1,8 +1,12 @@
-class Authorization < ActiveRecord::Base
+class Authorization < ApplicationModel
   belongs_to              :user
   validates_presence_of   :user_id, :uid, :provider
   validates_uniqueness_of :uid,     :scope => :provider
   
+  after_create            :cache_delete
+  after_update            :cache_delete
+  after_destroy           :cache_delete
+  
   def self.find_from_hash(hash)
     auth = Authorization.where( :provider => hash['provider'], :uid => hash['uid'] )
     if auth && auth.first then
diff --git a/app/models/group.rb b/app/models/group.rb
index 217c0d7e4..4c46900af 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -1,3 +1,6 @@
-class Group < ActiveRecord::Base
+class Group < ApplicationModel
   has_and_belongs_to_many :users
+  after_create            :cache_delete
+  after_update            :cache_delete
+  after_destroy           :cache_delete
 end
diff --git a/app/models/role.rb b/app/models/role.rb
index 33cd819ac..4248f70be 100644
--- a/app/models/role.rb
+++ b/app/models/role.rb
@@ -1,3 +1,6 @@
-class Role < ActiveRecord::Base
+class Role < ApplicationModel
   has_and_belongs_to_many :users
+  after_create            :cache_delete
+  after_update            :cache_delete
+  after_destroy           :cache_delete
 end