diff --git a/Gemfile b/Gemfile
index 7be2a89..c907339 100644
--- a/Gemfile
+++ b/Gemfile
@@ -104,6 +104,7 @@
 group :test do
   gem 'minitest-rails-capybara'
   gem 'minitest-reporters'
+  gem 'rack-test'
 end
 
 #