diff --git a/Casks/iterm2-nightly.rb b/Casks/iterm2-nightly.rb
index 789c2b733..17d372279 100644
--- a/Casks/iterm2-nightly.rb
+++ b/Casks/iterm2-nightly.rb
@@ -1,5 +1,5 @@
 class Iterm2Nightly < Cask
-  version 'latest'
+  version :latest
   sha256 :no_check
 
   url 'http://www.iterm2.com/nightly/latest'