Appraisals in named_seeds-2.1.0 vs Appraisals in named_seeds-2.2.0

@@ -10,12 +10,7 @@
 appraise 'rails42' do
   gem 'rails', '~> 4.2.0'
 end
 
 appraise 'rails50' do
-  gem 'rails',            github: 'rails/rails'
-  gem 'sprockets-rails',  github: "rails/sprockets-rails"
-  gem 'sprockets',        github: "rails/sprockets"
-  gem 'sass-rails',       github: "rails/sass-rails"
-  gem 'arel',             github: "rails/arel"
-  gem 'rack',             github: 'rack/rack'
+  gem 'rails', '~> 5.0.0'
 end