diff --git a/Casks/doubletwist.rb b/Casks/doubletwist.rb
index 693751adfd0..5292c52593e 100644
--- a/Casks/doubletwist.rb
+++ b/Casks/doubletwist.rb
@@ -1,4 +1,4 @@
-class Doubletwist < Cask
+cask :v1 => 'doubletwist' do
   version '3.1.2'
   sha256 '47975cc7517a6cf8c90362536a7feb53f0ff8af7d45866481d37cad2fcae4dac'