diff --git a/Gemfile b/Gemfile
index 92746e9..f569ecf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,5 +11,6 @@ group :development, :test do
   gem 'rspec-expectations', '>= 3.0.0'
   gem 'rspec-mocks', '>= 3.0.0'
   gem 'rubocop', '= 1.3.1'
+  gem 'rugged'
   gem 'simplecov'
 end