diff --git a/Casks/emacs-app-nightly.rb b/Casks/emacs-app-nightly.rb
index 89988e11..11e317ee 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 '2026-01-27.d09cedc.master'
+  version '2026-01-28.dfc2a66.master'
 
   on_arm do
-    sha256 '2ead8a55d9ad46685d5aa609bc782e3f531752efecd5e41e83de4a6e718c4e70'
-    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2026-01-27.d09cedc.master/Emacs.2026-01-27.d09cedc.master.macOS-11.arm64.dmg'
+    sha256 '4c56ed99513e198f4d9889f785c03814c5d45aadc02c54ac1487e0daa0f2b4d2'
+    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2026-01-28.dfc2a66.master/Emacs.2026-01-28.dfc2a66.master.macOS-11.arm64.dmg'
     depends_on macos: '>= :big_sur'
   end
   on_intel do
-    sha256 'f267882bbf84740f7ae8a5dffd7a5a08068ee73883816eabc01ed0bb47b6032c'
-    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2026-01-27.d09cedc.master/Emacs.2026-01-27.d09cedc.master.macOS-11.x86_64.dmg'
+    sha256 '652f97c6dafda61b0a1a83dcc9ca11a0b0dc6f28b2658f1d7fd1103729a3e3c6'
+    url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2026-01-28.dfc2a66.master/Emacs.2026-01-28.dfc2a66.master.macOS-11.x86_64.dmg'
     depends_on macos: '>= :big_sur'
   end