diff --git a/Casks/emacs-app-nightly-28.rb b/Casks/emacs-app-nightly-28.rb
index 97a61d4d..87a5c2ff 100644
--- a/Casks/emacs-app-nightly-28.rb
+++ b/Casks/emacs-app-nightly-28.rb
@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 cask 'emacs-app-nightly-28' do
-  version '2021-11-30.e632b83.emacs-28'
+  version '2021-12-01.f38dfa5.emacs-28'
 
-  sha256 '2554ac7d9a03d2f58910d9278d4f4b2cb8c1f5b933ed13c0f94531816b0e970d'
-  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-11-30.e632b83.emacs-28/Emacs.2021-11-30.e632b83.emacs-28.macOS-10-15.x86_64.dmg'
+  sha256 'd35d71f706b7fc7119fda9b4f0f1d35f6b60294df4088bbf46f6ab05cbef09d9'
+  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-12-01.f38dfa5.emacs-28/Emacs.2021-12-01.f38dfa5.emacs-28.macOS-10-15.x86_64.dmg'
 
   name 'Emacs'
   desc 'GNU Emacs text editor (nightly build of emacs-28 branch)'