diff --git a/Casks/onepassword3.rb b/Casks/onepassword3.rb
index 73418e1fc..648fe7102 100644
--- a/Casks/onepassword3.rb
+++ b/Casks/onepassword3.rb
@@ -1,4 +1,4 @@
-class Onepassword3 < Cask
+cask :v1 => 'onepassword3' do
   version '3.8.21'
   sha256 'f8dd3b0b4acf6474ac9ba39b8f3fd2f98961064fb266243a62ceb59eb564c889'