diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index ccb8a1fc8dff9..4fd1a2369f693 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,5 +1,20 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Deprecate `Rails::Generators::ActiveModel#update_attributes` in favor of `#update`.
+
+    ORMs that implement `Generators::ActiveModel#update_attributes` should change
+    to `#update`. Scaffold controller generators should change calls like:
+
+        @orm_instance.update_attributes(...)
+
+    to:
+
+        @orm_instance.update(...)
+
+    This goes along with the addition of `ActiveRecord::Base#update`.
+
+    *Carlos Antonio da Silva*
+
 *   Include `jbuilder` by default and rely on its scaffold generator to show json API.
     Check https://github.com/rails/jbuilder for more info and examples.
 
diff --git a/railties/lib/rails/generators/active_model.rb b/railties/lib/rails/generators/active_model.rb
index 6183944bb0d00..e5373704d7bb6 100644
--- a/railties/lib/rails/generators/active_model.rb
+++ b/railties/lib/rails/generators/active_model.rb
@@ -1,3 +1,5 @@
+require 'active_support/deprecation'
+
 module Rails
   module Generators
     # ActiveModel is a class to be implemented by each ORM to allow Rails to
@@ -63,6 +65,12 @@ def update(params=nil)
         "#{name}.update(#{params})"
       end
 
+      def update_attributes(*args) # :nodoc:
+        ActiveSupport::Deprecation.warn("Calling '@orm_instance.update_attributes' " \
+          "is deprecated, please use '@orm_instance.update' instead.")
+        update(*args)
+      end
+
       # POST create
       # PATCH/PUT update
       def errors