diff --git a/Casks/iterm2-nightly.rb b/Casks/iterm2-nightly.rb
index 709bba852..a4061929e 100644
--- a/Casks/iterm2-nightly.rb
+++ b/Casks/iterm2-nightly.rb
@@ -1,4 +1,4 @@
-class Iterm2Nightly < Cask
+cask :v1 => 'iterm2-nightly' do
   version :latest
   sha256 :no_check