diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index 97d1c47c..5541e085 100644
--- a/Casks/emacs-app-nightly/meta.json
+++ b/Casks/emacs-app-nightly/meta.json
@@ -7,13 +7,13 @@
   ],
   "desc": "GNU Emacs text editor (nightly build)",
   "homepage": "https://github.com/jimeh/emacs-builds",
-  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-09-11.6e60e74.master/Emacs.2021-09-11.6e60e74.master.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-09-12.d314951.master/Emacs.2021-09-12.d314951.master.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-09-11.6e60e74.master",
+  "version": "2021-09-12.d314951.master",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "b0d54bdde6e7d87d35c76276cd9ebc240b5afad2ce937286fcdb7b4e0f63d1d5",
+  "sha256": "31322ab0a9b90137895a6554ce58b004be418ed2764a0e3411877ef9f67a3a01",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly/shield.json b/Casks/emacs-app-nightly/shield.json
index 98a6b2b2..ec4cb5b3 100644
--- a/Casks/emacs-app-nightly/shield.json
+++ b/Casks/emacs-app-nightly/shield.json
@@ -5,5 +5,5 @@
   "namedLogo": "GNU Emacs",
   "logoColor": "white",
   "label": "nightly",
-  "message": "2021-09-11.6e60e74.master"
+  "message": "2021-09-12.d314951.master"
 }