diff --git a/Casks/emacs-app-nightly-28/meta.json b/Casks/emacs-app-nightly-28/meta.json
index 4d66fe7a..3cf56aee 100644
--- a/Casks/emacs-app-nightly-28/meta.json
+++ b/Casks/emacs-app-nightly-28/meta.json
@@ -7,13 +7,13 @@
   ],
   "desc": "GNU Emacs text editor (nightly build of emacs-28 branch)",
   "homepage": "https://github.com/jimeh/emacs-builds",
-  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-12-12.62139ae.emacs-28/Emacs.2021-12-12.62139ae.emacs-28.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-12-13.cea8dee.emacs-28/Emacs.2021-12-13.cea8dee.emacs-28.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-12-12.62139ae.emacs-28",
+  "version": "2021-12-13.cea8dee.emacs-28",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "0a08e20b15c9ca0ac0e65bdb81a7cd1043b3518c82091034c897bc72eacaf0cb",
+  "sha256": "82e93124adf3adaeee60af7c9f44586a67602e774a52bad205f8e42a1c449ee6",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly-28/shield.json b/Casks/emacs-app-nightly-28/shield.json
index 4b1465ee..a17dd28c 100644
--- a/Casks/emacs-app-nightly-28/shield.json
+++ b/Casks/emacs-app-nightly-28/shield.json
@@ -5,5 +5,5 @@
   "namedLogo": "GNU Emacs",
   "logoColor": "white",
   "label": "nightly@emacs-28",
-  "message": "2021-12-12.62139ae.emacs-28"
+  "message": "2021-12-13.cea8dee.emacs-28"
 }