diff --git a/Casks/m/mountain.rb b/Casks/m/mountain.rb
index adc3420558dd3..7b7bd1e51c25f 100644
--- a/Casks/m/mountain.rb
+++ b/Casks/m/mountain.rb
@@ -7,10 +7,7 @@
   desc "Display notifications when mounting/unmounting volumes"
   homepage "https://appgineers.de/mountain/"
 
-  livecheck do
-    url "https://appgineers.de/mountain/files/mountaincast.xml"
-    strategy :sparkle, &:short_version
-  end
+  deprecate! date: "2025-03-31", because: :unmaintained
 
   app "Mountain.app"