diff --git a/Gemfile b/Gemfile
index 5ecc41fc1..099a4d254 100644
--- a/Gemfile
+++ b/Gemfile
@@ -78,7 +78,7 @@ end
 
 group :test do
   gem "shoulda", "~> 3.3.2"
-  gem "mocha"
+  gem "mocha", "~> 0.13.3"
   gem 'capybara', '~> 2.0.0'
 end