diff --git a/Casks/sourcegit.rb b/Casks/sourcegit.rb
index 5c52213..64ba092 100644
--- a/Casks/sourcegit.rb
+++ b/Casks/sourcegit.rb
@@ -15,7 +15,7 @@
     strategy :github_latest
   end
 
-  depends_on macos: ">= :big_sur"
+  depends_on macos: :big_sur
 
   app "SourceGit.app"