diff --git a/Gemfile b/Gemfile
index 37f2f9c..72ef788 100644
--- a/Gemfile
+++ b/Gemfile
@@ -86,6 +86,7 @@ end
 
 group :test do
   gem "shoulda", "~> 3.3.2"
+  gem "shoulda-matchers", "1.4.1"
   gem "mocha", "~> 1.0.0", :require => 'mocha/api'
   if RUBY_VERSION >= '1.9.3'
     gem "capybara", "~> 2.1.0"