diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index 51c4412a..287995cd 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.2021-12-05.6620d03.master/Emacs.2021-12-05.6620d03.master.macOS-10-15.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2021-12-06.e17aea7.master/Emacs.2021-12-06.e17aea7.master.macOS-10-15.x86_64.dmg",
   "appcast": null,
-  "version": "2021-12-05.6620d03.master",
+  "version": "2021-12-06.e17aea7.master",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "c25bc9ab29a1f8f053d5b9d3c7784016630ab1ec8d5ac632924c2179c497d74a",
+  "sha256": "278399bfe4f659539ddb4e1b73f191e4000e5432409017d8af509eaf99fc9069",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-nightly/shield.json b/Casks/emacs-app-nightly/shield.json
index 583a951f..20350201 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": "2021-12-05.6620d03.master"
+  "message": "2021-12-06.e17aea7.master"
 }