diff --git a/Casks/emacs-app-nightly.rb b/Casks/emacs-app-nightly.rb
index 4da2713f..9c642793 100644
--- a/Casks/emacs-app-nightly.rb
+++ b/Casks/emacs-app-nightly.rb
@@ -5,16 +5,16 @@ cask 'emacs-app-nightly' do
   desc 'GNU Emacs text editor (nightly build)'
   homepage 'https://github.com/jimeh/emacs-builds'
 
-  version '2024-12-30.2f1052d.master'
+  version '2025-01-01.78bc594.master'
 
   on_arm do
-    sha256 '74dbc981edc06ce2da66e9588ba2712417b620c6fdc1150fe63b94ba5f20ea7a'
-    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2024-12-30.2f1052d.master/Emacs.2024-12-30.2f1052d.master.macOS-11.arm64.dmg'
+    sha256 '72dcba9a88ae126ebfe326077bdbfe452add4ffcca9954bea51c34edecaafe60'
+    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2025-01-01.78bc594.master/Emacs.2025-01-01.78bc594.master.macOS-11.arm64.dmg'
     depends_on macos: '>= :big_sur'
   end
   on_intel do
-    sha256 'fb55c29b083aa1fc3b9601dcf1fee7d4639cb79528f93ad9284f4778f2a3be49'
-    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2024-12-30.2f1052d.master/Emacs.2024-12-30.2f1052d.master.macOS-11.x86_64.dmg'
+    sha256 '78f7931b1f8bc5c846c065c99b21588fb4ec148a6e7ef2521583799e00025057'
+    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2025-01-01.78bc594.master/Emacs.2025-01-01.78bc594.master.macOS-11.x86_64.dmg'
     depends_on macos: '>= :big_sur'
   end