diff --git a/Gemfile b/Gemfile
index 4eff0b8e31dbdafec1e0491115da275509a05479..4e1f853dd7c44195ae124fa9bf52e32283c368da 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,6 +2,7 @@ source "https://rubygems.org"
 
 group :development, :test do
   gem 'rake'
+  gem 'debugger'
   gem 'mongoid', '2.6.0'
   gem 'bson_ext', :platforms => :ruby
   gem 'geoip'