diff --git a/Casks/localsend.rb b/Casks/localsend.rb
index 84c670e..1bef37f 100644
--- a/Casks/localsend.rb
+++ b/Casks/localsend.rb
@@ -7,5 +7,7 @@
   desc "An open source cross-platform alternative to AirDrop"
   homepage "https://localsend.org"
 
+  depends_on macos: ">= :catalina"
+
   app "LocalSend.app"
 end