diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index 1485ffc6..757cf686 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.2021-10-09.cc202c7.master/Emacs.2021-10-09.cc202c7.master.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-10-08.3ae275e.master/Emacs.2021-10-08.3ae275e.master.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-10-09.cc202c7.master",
+  "version": "2021-10-08.3ae275e.master",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "70cd296920e51d0d1501b8b70553fb540d036de90f604e0fc7e19060d49febbd",
+  "sha256": "8851f78b9afeaf3a475e2b9a19ecac32f4f51ab25ed0f5043bd4489e5f1769f4",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly/shield.json b/Casks/emacs-app-nightly/shield.json
index 961621fa..b0099759 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": "2021-10-09.cc202c7.master"
+  "message": "2021-10-08.3ae275e.master"
 }