diff --git a/Casks/emacs-mac.rb b/Casks/emacs-mac.rb
index b021698..a8cb992 100644
--- a/Casks/emacs-mac.rb
+++ b/Casks/emacs-mac.rb
@@ -1,4 +1,4 @@
-cask :v1 => 'emacs-mac' do
+cask 'emacs-mac' do
   version 'emacs-24.5-z-mac-5.15'
 
   sha256 '66571ecd8ea14c6e8ce63d1d60fdbaff66f81e2a3ae45c45102a0fb9e5d3ada6'