diff --git a/Gemfile b/Gemfile
index fb9ece0..a9d6686 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,6 +8,7 @@ gemspec
 gem 'testbeds'
 
 # Gems used by the dummy application
+gem 'rails', '~> 4.0'
 gem "jquery-rails"
 gem "sqlite3"
 gem 'coffee-script'