diff --git a/Gemfile b/Gemfile
index 29be893..7859791 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,6 +59,7 @@ group :development, :test do
   gem 'capybara'
   gem 'puma'
   gem 'launchy'
+  gem 'rubocop'
 end
 
 group :test do
diff --git a/Gemfile.lock b/Gemfile.lock
index 8027dda..2149d94 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -329,6 +329,7 @@ DEPENDENCIES
   rails-controller-testing
   rails-i18n
   rspec-rails (~> 3.0)
+  rubocop
   rubocop-faker
   sass-rails
   sdoc (~> 0.4.0)