diff --git a/Gemfile b/Gemfile
index c54ff4726..9cfe9fd81 100644
--- a/Gemfile
+++ b/Gemfile
@@ -94,7 +94,7 @@ end
 
 group :test do
   gem "rails-dom-testing"
-  gem 'mocha', '>= 1.4.0'
+  gem 'mocha', '>= 2.0.1'
   gem 'simplecov', '~> 0.22.0', :require => false
   gem "ffi", platforms: [:mingw, :x64_mingw, :mswin]
   # For running system tests