diff --git a/Casks/rstudio-preview.rb b/Casks/rstudio-preview.rb
index 264947829..ec98edd74 100644
--- a/Casks/rstudio-preview.rb
+++ b/Casks/rstudio-preview.rb
@@ -1,4 +1,4 @@
-class RstudioPreview < Cask
+cask :v1 => 'rstudio-preview' do
   version '0.98.1079'
   sha256 'f504400b9cb6d01f7504beedc6ad41b1b10ca8bab8a238eacfe3989cce0b0c9e'