diff --git a/Casks/emacs-mac.rb b/Casks/emacs-mac.rb
index 6cbfc44..6237b59 100644
--- a/Casks/emacs-mac.rb
+++ b/Casks/emacs-mac.rb
@@ -6,18 +6,18 @@
 
     if MacOS.version <= :big_sur
       sha256 '6a62f75894475fa3d9474cb5b7a9a596c5c5466b94398687b8a71d84fc3af6d8'
-      url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-11.6.8.zip'
+      url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-11.6.8.zip', verified: "github.com/railwaycat/homebrew-emacsmacport"
     else
       # for macOS version is or newer than Monterey
       sha256 '484690f89fceaa03f686b38bff6c12f462bf26e1e8d61283fe22df30d1481482'
-      url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-12.6.zip'
+      url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-12.6.zip', verified: "github.com/railwaycat/homebrew-emacsmacport"
     end
   else # Apple Silicon
     depends_on macos: ">= :monterey"
 
     # for macOS version is or newer than Monterey
     sha256 '488a1bf68a87a3dd304a25f2a1fe2f0b4ae95c2c80bfe4e53bdbeff0e3a2c5d4'
-    url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-arm64-12.5.1.zip'
+    url 'https://github.com/railwaycat/homebrew-emacsmacport/releases/download/emacs-28.2-mac-9.1/emacs-28.2-mac-9.1-arm64-12.5.1.zip', verified: "github.com/railwaycat/homebrew-emacsmacport"
   end
 
   name 'Emacs-mac'