diff --git a/Casks/wowhead-client.rb b/Casks/wowhead-client.rb
index 698e2c8d480..d40b496a53a 100644
--- a/Casks/wowhead-client.rb
+++ b/Casks/wowhead-client.rb
@@ -1,5 +1,6 @@
 class WowheadClient < Cask
   url 'http://static.wowhead.com/download/Wowhead_Client.dmg'
+  appcast 'http://client.wowhead.com/files/wowhead-client-appcast.xml'
   homepage 'http://wowhead.com'
   version '1.2.2'
   sha256 '6d3b8cebcc74da52c459c4fd91168ad24b4c00dd12c63c44c25fb60870ff716b'