diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index e116f6b5..0bd776da 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.2021-10-19.a4a3530.master/Emacs.2021-10-19.a4a3530.master.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-10-20.4e9764e.master/Emacs.2021-10-20.4e9764e.master.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-10-19.a4a3530.master",
+  "version": "2021-10-20.4e9764e.master",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "013ecd1f78479873bba38b427d9a735960abac7af8d68c5af55cb6913c1fa2e3",
+  "sha256": "5e20589af24620488a522d8450a9ca9d98b59e22624458edc37dc7801d2445fb",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly/shield.json b/Casks/emacs-app-nightly/shield.json
index b44aaaf1..14af7772 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": "2021-10-19.a4a3530.master"
+  "message": "2021-10-20.4e9764e.master"
 }