diff --git a/Gemfile b/Gemfile
index e83e0b6129..5749c43d02 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'rack-cache', '~> 1.2'
 gem 'bcrypt-ruby', '~> 3.0.0'
 gem 'jquery-rails', '~> 2.2.0'
 gem 'turbolinks'
-gem 'coffee-rails', github: 'rails/coffee-rails'
+gem 'coffee-rails', '~> 4.0.0.beta1'
 
 # Needed for compiling the ActionDispatch::Journey parser
 gem 'racc', '>=1.4.6', require: false
diff --git a/railties/lib/rails/generators/app_base.rb b/railties/lib/rails/generators/app_base.rb
index def1d69227..4e703151ba 100644
--- a/railties/lib/rails/generators/app_base.rb
+++ b/railties/lib/rails/generators/app_base.rb
@@ -196,8 +196,8 @@ module Rails
             # Gems used only for assets and not required
             # in production environments by default.
             group :assets do
-              gem 'sass-rails',   '~> 4.0.0.beta'
-              gem 'coffee-rails', '~> 4.0.0.beta'
+              gem 'sass-rails',   '~> 4.0.0.beta1'
+              gem 'coffee-rails', '~> 4.0.0.beta1'
 
               # See https://github.com/sstephenson/execjs#readme for more supported runtimes
               #{javascript_runtime_gemfile_entry}