diff --git a/Casks/s/seaglass.rb b/Casks/s/seaglass.rb
index 1073c5131a..3396aeb9f9 100644
--- a/Casks/s/seaglass.rb
+++ b/Casks/s/seaglass.rb
@@ -7,12 +7,10 @@ cask "seaglass" do
   desc "Matrix client"
   homepage "https://github.com/neilalexander/seaglass/"
 
+  deprecate! date: "2023-12-17", because: :discontinued
+
   auto_updates true
   depends_on macos: ">= :high_sierra"
 
   app "Seaglass.app"
-
-  caveats do
-    discontinued
-  end
 end