diff --git a/lib/devise.rb b/lib/devise.rb
index 14157bc5..c059d5b6 100644
--- a/lib/devise.rb
+++ b/lib/devise.rb
@@ -9,6 +9,7 @@ module Devise
   }.freeze
 
   STRATEGIES  = [:authenticatable].freeze
+  SERIALIZERS = [:authenticatable, :rememberable].freeze
   TRUE_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE'].freeze
 
   # Maps the messages types that comes from warden to a flash type.
@@ -104,8 +105,10 @@ module Devise
     # block.
     def configure_warden_manager(manager) #:nodoc:
       manager.default_strategies *Devise::STRATEGIES
+      manager.default_serializers *Devise::SERIALIZERS
       manager.failure_app = Devise::Failure
       manager.silence_missing_strategies!
+      manager.silence_missing_serializers!
 
       # If the user provided a warden hook, call it now.
       @warden_config.try :call, manager
@@ -118,5 +121,14 @@ module Devise
   end
 end
 
-require 'devise/warden'
+begin
+  require 'warden'
+rescue
+  gem 'warden'
+  require 'warden'
+end
+
+require 'devise/strategies/base'
+require 'devise/serializers/base'
+
 require 'devise/rails'
\ No newline at end of file
diff --git a/lib/devise/hooks/rememberable.rb b/lib/devise/hooks/rememberable.rb
deleted file mode 100644
index 4293dc9d..00000000
--- a/lib/devise/hooks/rememberable.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-# After authenticate hook to verify if the user in the given scope asked to be
-# remembered while he does not sign out. Generates a new remember token for
-# that specific user and adds a cookie with this user info to sign in this user
-# automatically without asking for credentials. Refer to rememberable strategy
-# for more info.
-Warden::Manager.after_authentication do |record, warden, options|
-  scope = options[:scope]
-  remember_me = warden.params[scope].try(:fetch, :remember_me, nil)
-
-  if Devise::TRUE_VALUES.include?(remember_me) && record.respond_to?(:remember_me!)
-    record.remember_me!
-
-    warden.response.set_cookie "remember_#{scope}_token", {
-      :value => record.class.serialize_into_cookie(record),
-      :expires => record.remember_expires_at,
-      :path => "/"
-    }
-  end
-end
-
-# Before logout hook to forget the user in the given scope, only if rememberable
-# is activated for this scope. Also clear remember token to ensure the user
-# won't be remembered again.
-Warden::Manager.before_logout do |record, warden, scope|
-  if record.respond_to?(:forget_me!)
-    record.forget_me!
-    warden.response.delete_cookie "remember_#{scope}_token"
-  end
-end
diff --git a/lib/devise/middlewares/rememberable.rb b/lib/devise/middlewares/rememberable.rb
deleted file mode 100644
index ae5b2e3b..00000000
--- a/lib/devise/middlewares/rememberable.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-module Devise
-  module Middlewares
-    class Rememberable
-      def initialize(app)
-        @app = app
-      end
-
-      def call(env)
-        auth = env['warden']
-        scopes = select_cookies(auth.request)
-        scopes.each do |scope, token|
-          mapping = Devise.mappings[scope]
-          next unless mapping && mapping.for.include?(:rememberable)
-          user = mapping.to.serialize_from_cookie(token)
-          auth.set_user(user, :scope => scope) if user
-        end
-
-        @app.call(env)
-      end
-
-      protected
-
-        def select_cookies(request)
-          scopes = {}
-          matching = /remember_(#{Devise.mappings.keys.join("|")})_token/
-          request.cookies.each do |key, value|
-            if key.to_s =~ matching
-              scopes[$1.to_sym] = value
-            end
-          end
-          scopes
-        end
-    end
-  end
-end
diff --git a/lib/devise/models/authenticatable.rb b/lib/devise/models/authenticatable.rb
index 7bbf1e01..8e8c8d1a 100644
--- a/lib/devise/models/authenticatable.rb
+++ b/lib/devise/models/authenticatable.rb
@@ -1,4 +1,5 @@
 require 'devise/strategies/authenticatable'
+require 'devise/serializers/authenticatable'
 
 module Devise
   module Models
@@ -77,6 +78,17 @@ module Devise
           end
           perishable
         end
+
+        # Hook to serialize user into session. Overwrite if you want.
+        def serialize_into_session(record)
+          [record.class, record.id]
+        end
+
+        # Hook to serialize user from session. Overwrite if you want.
+        def serialize_from_session(keys)
+          klass, id = keys
+          klass.find_by_id(id)
+        end
       end
 
       Devise::Models.config(self, :pepper)
diff --git a/lib/devise/models/rememberable.rb b/lib/devise/models/rememberable.rb
index e4c7022e..9e92b8a1 100644
--- a/lib/devise/models/rememberable.rb
+++ b/lib/devise/models/rememberable.rb
@@ -1,6 +1,5 @@
 require 'digest/sha1'
-require 'devise/hooks/rememberable'
-require 'devise/middlewares/rememberable'
+require 'devise/serializers/rememberable'
 
 module Devise
   module Models
diff --git a/lib/devise/rails.rb b/lib/devise/rails.rb
index f7817ef7..b0b29aba 100644
--- a/lib/devise/rails.rb
+++ b/lib/devise/rails.rb
@@ -10,8 +10,5 @@ Rails.configuration.after_initialize do
     Devise.configure_warden_manager(manager)
   end
 
-  # If using a rememberable module, include the middleware that log users.
-  Rails.configuration.middleware.use Devise::Middlewares::Rememberable
-
   I18n.load_path.unshift File.expand_path(File.join(File.dirname(__FILE__), 'locales', 'en.yml'))
 end
diff --git a/lib/devise/serializers/authenticatable.rb b/lib/devise/serializers/authenticatable.rb
new file mode 100644
index 00000000..c292e5ed
--- /dev/null
+++ b/lib/devise/serializers/authenticatable.rb
@@ -0,0 +1,9 @@
+module Devise
+  module Serializers
+    class Authenticatable < Warden::Serializers::Session
+      include Devise::Serializers::Base
+    end
+  end
+end
+
+Warden::Serializers.add(:authenticatable, Devise::Serializers::Authenticatable)
\ No newline at end of file
diff --git a/lib/devise/serializers/base.rb b/lib/devise/serializers/base.rb
new file mode 100644
index 00000000..721787fc
--- /dev/null
+++ b/lib/devise/serializers/base.rb
@@ -0,0 +1,41 @@
+module Devise
+  module Serializers
+    module Base
+      include Devise::Strategies::Base
+      attr_reader :scope
+
+      def serialize(record)
+        record.class.send(:"serialize_into_#{serialization_type}", record)
+      end
+
+      def deserialize(keys)
+        mapping.to.send(:"serialize_from_#{serialization_type}", keys)
+      end
+
+      def store(user, scope)
+        @scope = scope
+        return unless valid?
+        super
+      end
+
+      def fetch(scope)
+        @scope = scope
+        return unless valid?
+        super
+      end
+
+      def delete(scope, user=nil)
+        @scope = scope
+        return unless valid?
+        super
+      end
+
+      def serialization_type
+        @serialization_type ||= begin
+          warden = self.class.ancestors.find{ |k| k < Warden::Serializers::Base && k != self.class }
+          warden.name.split("::").last.underscore
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/devise/serializers/rememberable.rb b/lib/devise/serializers/rememberable.rb
new file mode 100644
index 00000000..1352df7d
--- /dev/null
+++ b/lib/devise/serializers/rememberable.rb
@@ -0,0 +1,26 @@
+module Devise
+  module Serializers
+    class Rememberable < Warden::Serializers::Cookie
+      include Devise::Serializers::Base
+
+      def store(record, scope)
+        remember_me = params[scope].try(:fetch, :remember_me, nil)
+        if Devise::TRUE_VALUES.include?(remember_me) && record.respond_to?(:remember_me!)
+          record.remember_me!
+          super
+        end
+      end
+      
+      def default_options(record)
+        super.merge!(:expires => record.remember_expires_at)
+      end
+
+      def delete(scope, record=nil)
+        record.forget_me! if record && record.respond_to?(:forget_me!)
+        super
+      end
+    end
+  end
+end
+
+Warden::Serializers.add(:rememberable, Devise::Serializers::Rememberable)
\ No newline at end of file
diff --git a/lib/devise/strategies/authenticatable.rb b/lib/devise/strategies/authenticatable.rb
index 307638b9..fa302be1 100644
--- a/lib/devise/strategies/authenticatable.rb
+++ b/lib/devise/strategies/authenticatable.rb
@@ -2,7 +2,8 @@ module Devise
   module Strategies
     # Default strategy for signing in a user, based on his email and password.
     # Redirects to sign_in page if it's not authenticated
-    class Authenticatable < Devise::Strategies::Base
+    class Authenticatable < Warden::Strategies::Base
+      include Devise::Strategies::Base
 
       # Authenticate a user based on email and password params, returning to warden
       # success and the authenticated user if everything is okay. Otherwise redirect
diff --git a/lib/devise/strategies/base.rb b/lib/devise/strategies/base.rb
index 15a9a2f3..70d0a854 100644
--- a/lib/devise/strategies/base.rb
+++ b/lib/devise/strategies/base.rb
@@ -2,22 +2,23 @@ module Devise
   module Strategies
     # Base strategy for Devise. Responsible for verifying correct scope and
     # mapping.
-    class Base < Warden::Strategies::Base
+    module Base
 
       # Validate strategy. By default will raise an error if no scope or an
       # invalid mapping is found.
       def valid?
-        mapping.for.include?(self.class.name.split("::").last.underscore.to_sym)
+        mapping.for.include?(klass_type)
       end
 
       # Checks if a valid scope was given for devise and find mapping based on
       # this scope.
       def mapping
-        @mapping ||= begin
-          raise "You need to give a scope for Devise authentication" unless scope
-          raise "You need to give a valid Devise mapping"            unless mapping = Devise.mappings[scope]
-          mapping
-        end
+        @mapping ||= Devise.mappings[scope]
+      end
+
+      # Store this class type.
+      def klass_type
+        @klass_type ||= self.class.name.split("::").last.underscore.to_sym
       end
     end
   end
diff --git a/lib/devise/warden.rb b/lib/devise/warden.rb
deleted file mode 100644
index 8024de46..00000000
--- a/lib/devise/warden.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-begin
-  require 'warden'
-rescue
-  gem 'warden'
-  require 'warden'
-end
-
-# Session Serialization in. This block determines how the user will be stored
-# in the session. If you're using a complex object like an ActiveRecord model,
-# it is not a good idea to store the complete object. An ID is sufficient.
-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_by_id(id)
-end
-
-# Setup devise strategies for Warden
-require 'devise/strategies/base'
diff --git a/test/devise_test.rb b/test/devise_test.rb
index 9baca4a9..3ab0e61c 100644
--- a/test/devise_test.rb
+++ b/test/devise_test.rb
@@ -15,6 +15,10 @@ class DeviseTest < ActiveSupport::TestCase
       @silence_missing_strategies = true
     end
 
+    def silence_missing_serializers!
+      @silence_missing_serializers = true
+    end
+
     def default_strategies(*args)
       if args.empty?
         @default_strategies
@@ -22,6 +26,14 @@ class DeviseTest < ActiveSupport::TestCase
         @default_strategies = args
       end
     end
+
+    def default_serializers(*args)
+      if args.empty?
+        @default_serializers
+      else
+        @default_serializers = args
+      end
+    end
   end
 
   test 'DeviseMailer.sender can be configured through Devise' do
diff --git a/test/integration/rememberable_test.rb b/test/integration/rememberable_test.rb
index 0ef048cf..d06b8e48 100644
--- a/test/integration/rememberable_test.rb
+++ b/test/integration/rememberable_test.rb
@@ -6,7 +6,7 @@ class RememberMeTest < ActionController::IntegrationTest
     Devise.remember_for = 1
     user = create_user
     user.remember_me!
-    cookies['remember_user_token'] = User.serialize_into_cookie(user) + add_to_token
+    cookies['warden.user.user.key'] = User.serialize_into_cookie(user) + add_to_token
     user
   end