diff --git a/Casks/m/mumble@snapshot.rb b/Casks/m/mumble@snapshot.rb
index 55f8dfc3d529..5e369364b420 100644
--- a/Casks/m/mumble@snapshot.rb
+++ b/Casks/m/mumble@snapshot.rb
@@ -29,4 +29,8 @@
     "~/Library/Preferences/net.sourceforge.mumble.Mumble.plist",
     "~/Library/Saved Application State/net.sourceforge.mumble.Mumble.savedState",
   ]
+
+  caveats do
+    requires_rosetta
+  end
 end