diff --git a/Casks/c/chirp.rb b/Casks/c/chirp.rb
index 874f9bbf12..51c861601e 100644
--- a/Casks/c/chirp.rb
+++ b/Casks/c/chirp.rb
@@ -12,6 +12,8 @@ cask "chirp" do
     regex(/next[._-]v?(\d+(?:\.\d+)*)/i)
   end
 
+  depends_on macos: ">= :big_sur"
+
   app "CHIRP.app"
 
   zap trash: "~/.chirp"