diff --git a/Gemfile b/Gemfile
index 621064e..db9d914 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,9 @@ gem 'redmine_client', :git => "git://github.com/oruen/redmine_client.git"
 gem 'mongoid_rails_migrations'
 gem 'useragent', '~> 0.3.1'
 gem 'pivotal-tracker'
-gem 'thin'
+if ENV['HEROKU']
+  gem 'thin'
+end
 
 platform :ruby do
   gem 'bson_ext', '~> 1.2'
--
libgit2 0.21.2