diff --git a/Casks/emacs-app-pretest/meta.json b/Casks/emacs-app-pretest/meta.json
index 0d0eadd0..1d096ded 100644
--- a/Casks/emacs-app-pretest/meta.json
+++ b/Casks/emacs-app-pretest/meta.json
@@ -7,13 +7,13 @@
   ],
   "desc": "GNU Emacs text editor (latest pretest)",
   "homepage": "https://github.com/jimeh/emacs-builds",
-  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs-28.1.90-pretest/Emacs.2022-06-29.f1de6c0.emacs-28-1-90-pretest.macOS-11.x86_64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs-28.1.91-pretest/Emacs.2022-08-01.e6af496.emacs-28-1-91-pretest.macOS-11.x86_64.dmg",
   "appcast": null,
-  "version": "28.1.90-pretest",
+  "version": "28.1.91-pretest",
   "versions": {},
   "installed": null,
   "outdated": false,
-  "sha256": "3af04b7aa7c63b3cb88b4e2837e879ec3209c2fe4e8006a445bae53f67887960",
+  "sha256": "0ce386b1a30402b8db794670e5c94a5f5dbb249337559f030e6aa13f09a6d89e",
   "artifacts": [
     [
       "Emacs.app"
diff --git a/Casks/emacs-app-pretest/shield.json b/Casks/emacs-app-pretest/shield.json
index b50a533c..4d35c554 100644
--- a/Casks/emacs-app-pretest/shield.json
+++ b/Casks/emacs-app-pretest/shield.json
@@ -5,5 +5,5 @@
   "namedLogo": "GNU Emacs",
   "logoColor": "white",
   "label": "pretest",
-  "message": "v28.1.90-pretest"
+  "message": "v28.1.91-pretest"
 }