diff --git a/CHANGELOG b/CHANGELOG
index b3895d8..598b747 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+v9.1.1:
+  date: 2024-06-11
+  changes:
+    - Remove dependency on `p-each-series` package.
 v9.1.0:
   date: 2024-06-11
   changes:
diff --git a/README.md b/README.md
index 0709fca..a05274e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# grunt-contrib-qunit v9.1.0 [![Build Status](https://github.com/gruntjs/grunt-contrib-qunit/workflows/Tests/badge.svg)](https://github.com/gruntjs/grunt-contrib-qunit/actions?workflow=Tests)
+# grunt-contrib-qunit v9.1.1 [![Build Status](https://github.com/gruntjs/grunt-contrib-qunit/workflows/Tests/badge.svg)](https://github.com/gruntjs/grunt-contrib-qunit/actions?workflow=Tests)
 
 > Run QUnit unit tests in a headless Chrome instance
 
@@ -275,6 +275,7 @@ grunt.event.on('qunit.on.testEnd', function (test) {
 
 ## Release History
 
+ * 2024-06-11   v9.1.1   Remove dependency on `p-each-series` package.
  * 2024-06-11   v9.1.0   Re-introduce `qunit.log` Grunt event.
  * 2024-06-09   v9.0.0   Update to Puppeteer 22. Require Node.js 18 or later. Remove [details parameter](https://qunitjs.com/api/callbacks/QUnit.done/) to Grunt event `qunit.done`, deprecated since QUnit 2.2. Remove Grunt events `qunit.testStart`, `qunit.log`, `qunit.testDone`, `qunit.moduleStart`, `qunit.moduleDone`. Use `qunit.on.*` instead.
  * 2023-09-16   v8.0.1   Add stack trace to uncaught errors.
diff --git a/package-lock.json b/package-lock.json
index edd6f0f..f09f5fb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "grunt-contrib-qunit",
-  "version": "9.1.0",
+  "version": "9.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "grunt-contrib-qunit",
-      "version": "9.1.0",
+      "version": "9.1.1",
       "license": "MIT",
       "dependencies": {
         "eventemitter2": "^6.4.9",
diff --git a/package.json b/package.json
index bc513d5..8ce1d6c 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "grunt-contrib-qunit",
   "description": "Run QUnit unit tests in a headless Chrome instance",
-  "version": "9.1.0",
+  "version": "9.1.1",
   "author": {
     "name": "Grunt Team",
     "url": "https://gruntjs.com/"