diff --git a/Gemfile b/Gemfile
index 9334227c..f76cb6c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.1.6' if ENV.key?('DYNO')
 
 gem 's3',              github: 'travis-ci/s3'
 
-gem 'travis-core',     github: 'travis-ci/travis-core'
+gem 'travis-core',     github: 'travis-ci/travis-core', ref: 'sf-repos_invalidated_at'
 gem 'travis-support',  github: 'travis-ci/travis-support'
 gem 'travis-config',   '~> 0.1.0'
 gem 'travis-sidekiqs', github: 'travis-ci/travis-sidekiqs', require: nil