diff --git a/Casks/k/keycast.rb b/Casks/k/keycast.rb
index 0201ae63ba..9587925c69 100644
--- a/Casks/k/keycast.rb
+++ b/Casks/k/keycast.rb
@@ -7,5 +7,7 @@ cask "keycast" do
   desc "Record keystroke for screencast"
   homepage "https://github.com/cho45/KeyCast"
 
+  deprecate! date: "2024-01-05", because: :discontinued
+
   app "KeyCast.app"
 end