diff --git a/Casks/astrill.rb b/Casks/astrill.rb
index 15762087e..3c9b5ca72 100644
--- a/Casks/astrill.rb
+++ b/Casks/astrill.rb
@@ -1,4 +1,4 @@
-class Astrill < Cask
+cask :v1 => 'astrill' do
   version :latest
   sha256 :no_check