diff --git a/Casks/emacs-app-nightly-28.rb b/Casks/emacs-app-nightly-28.rb
index 7e11daec..7ea6591b 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 '2022-01-20.f08dfa9.emacs-28'
+  version '2022-01-21.fbc9b12.emacs-28'
 
-  sha256 '1c0b88b4df02cd1076cc07b93b635757ffcd20195d110269db9eb9003a77a832'
-  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2022-01-20.f08dfa9.emacs-28/Emacs.2022-01-20.f08dfa9.emacs-28.macOS-10-15.x86_64.dmg'
+  sha256 '41134eee3ef28f2d36dcb1db94dfd0485af171ad5999b9049da53032d1b9919c'
+  url 'https://github.com/jimeh/emacs-builds/releases/download/Emacs.2022-01-21.fbc9b12.emacs-28/Emacs.2022-01-21.fbc9b12.emacs-28.macOS-10-15.x86_64.dmg'
 
   name 'Emacs'
   desc 'GNU Emacs text editor (nightly build of emacs-28 branch)'