diff --git a/Gemfile b/Gemfile
index d92fda3e..43d10a2b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,8 @@
 source 'https://rubygems.org'
 gemspec
 
+gem 's3',              github: 'travis-ci/s3'
+
 gem 'travis-core',     github: 'travis-ci/travis-core'
 gem 'travis-support',  github: 'travis-ci/travis-support'
 gem 'travis-config',   '~> 0.1.0'