diff --git a/Casks/z/zdoom.rb b/Casks/z/zdoom.rb
index 0975df2717..380dc4936a 100644
--- a/Casks/z/zdoom.rb
+++ b/Casks/z/zdoom.rb
@@ -7,9 +7,7 @@ cask "zdoom" do
   desc "Source port of Doom"
   homepage "https://zdoom.org/index"
 
-  app "ZDoom.app"
+  deprecate! date: "2023-12-17", because: :discontinued
 
-  caveats do
-    discontinued
-  end
+  app "ZDoom.app"
 end