diff --git a/lib/travis/api/app.rb b/lib/travis/api/app.rb
index a2763fdd..71d7ab9c 100644
--- a/lib/travis/api/app.rb
+++ b/lib/travis/api/app.rb
@@ -9,7 +9,9 @@ require 'travis/support/amqp'
 require 'travis/states_cache'
 require 'rack'
 require 'rack/protection'
-require 'rack/contrib'
+require 'rack/contrib/config'
+require 'rack/contrib/jsonp'
+require 'rack/contrib/post_body_content_type_parser'
 require 'dalli'
 require 'memcachier'
 require 'rack/cache'