diff --git a/Casks/emacs-app-nightly.rb b/Casks/emacs-app-nightly.rb
index 7655b0ff..2dbade50 100644
--- a/Casks/emacs-app-nightly.rb
+++ b/Casks/emacs-app-nightly.rb
@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 cask 'emacs-app-nightly' do
-  version '2021-08-08.c7855c8.master'
+  version '2021-08-09.75de09b.master'
 
-  sha256 'ba2fc8d45b580ad9034f6451706bd54a2082db9d4a8c82793d37ee5796c63d0d'
-  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-08-08.c7855c8.master/Emacs.2021-08-08.c7855c8.master.macOS-10-15.x86_64.dmg'
+  sha256 '4a09d0dd731a551ce9eceb7b6348aeba8097b7ad305d46293a3e1c2430bfd34f'
+  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-08-09.75de09b.master/Emacs.2021-08-09.75de09b.master.macOS-10-15.x86_64.dmg'
 
   name 'Emacs'
   desc 'GNU Emacs text editor (nightly build)'