diff --git a/config/schedule.rb b/config/schedule.rb
index 0a868df405..edec8351ac 100644
--- a/config/schedule.rb
+++ b/config/schedule.rb
@@ -1,4 +1,5 @@
 require 'whenever'
+require 'yaml'
 
 # Learn more: http://github.com/javan/whenever