diff --git a/Casks/emacs-app-nightly-28/meta.json b/Casks/emacs-app-nightly-28/meta.json
index fc6b551a..0e82d610 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.2021-10-22.efdffd8.emacs-28/Emacs.2021-10-22.efdffd8.emacs-28.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-10-23.4fd5c8d.emacs-28/Emacs.2021-10-23.4fd5c8d.emacs-28.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-10-22.efdffd8.emacs-28",
+  "version": "2021-10-23.4fd5c8d.emacs-28",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "f56ed51454ffa74076d8ea176a9fc00a673c64b092a590e7a8520af4e2fcbc00",
+  "sha256": "44e5e46d89932b83f347afd28d3dcfa85096dae3de8bd19cbfa54fae13710126",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly-28/shield.json b/Casks/emacs-app-nightly-28/shield.json
index 46f3bfb2..bf899cf5 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": "2021-10-22.efdffd8.emacs-28"
+  "message": "2021-10-23.4fd5c8d.emacs-28"
 }