diff --git a/CHANGELOG.rdoc b/CHANGELOG.rdoc
index 41429fde..8671af2d 100644
--- a/CHANGELOG.rdoc
+++ b/CHANGELOG.rdoc
@@ -1,3 +1,9 @@
+== 0.4.3
+
+* bug fix
+  * [#29] Authentication fail if user cannot be serialized from session;
+  * Default configuration values should not overwrite user values;
+
 == 0.4.2
 
 * deprecations
diff --git a/Rakefile b/Rakefile
index d322423a..88bb85d0 100644
--- a/Rakefile
+++ b/Rakefile
@@ -36,7 +36,7 @@ begin
     s.description = "Flexible authentication solution for Rails with Warden"
     s.authors = ['José Valim', 'Carlos Antônio']
     s.files =  FileList["[A-Z]*", "{app,config,generators,lib}/**/*", "init.rb"]
-    s.add_dependency("warden", "~> 0.5.1")
+    s.add_dependency("warden", "~> 0.5.2")
   end
 
   Jeweler::GemcutterTasks.new
diff --git a/lib/devise/warden.rb b/lib/devise/warden.rb
index 808990cc..8024de46 100644
--- a/lib/devise/warden.rb
+++ b/lib/devise/warden.rb
@@ -13,7 +13,7 @@ Warden::Manager.serialize_into_session{ |user| [user.class, user.id] }
 # Session Serialization out. This block gets the user out of the session.
 # It should be the reverse of serializing the object into the session
 Warden::Manager.serialize_from_session do |klass, id|
-  klass.find(id)
+  klass.find_by_id(id)
 end
 
 # Setup devise strategies for Warden
diff --git a/test/integration/authenticatable_test.rb b/test/integration/authenticatable_test.rb
index 11a8200c..0014f87d 100644
--- a/test/integration/authenticatable_test.rb
+++ b/test/integration/authenticatable_test.rb
@@ -184,4 +184,12 @@ class AuthenticationTest < ActionController::IntegrationTest
     visit 'users/index'
     assert_equal "Cart", @controller.user_session[:cart]
   end
+  
+  test 'destroyed account is logged out' do
+    sign_in_as_user
+    visit 'users/index'
+    User.destroy_all
+    visit 'users/index'
+    assert_redirected_to '/users/sign_in?unauthenticated=true'
+  end
 end