release(6.0.0): updated release notes & version (eslint-v6.0.0)
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index c13aee8..2a5d92c 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -19,6 +19,27 @@
 
 # Release Notes for Cordova ESLint
 
+## 6.0.0 (Jul 21, 2025)
+
+**Breaking Changes:**
+
+* feat!: ESLint 9 support (#47)
+* chore!: bump node requirement `>=20.9.0` (#53)
+
+**Chores:**
+
+* chore: various updates (#52)
+  * Source Code Licese Header Formatting
+  * `README.md` badges
+* chore: replace `nyc` with `c8` (#50)
+* chore: don't list dev dependencies in `NOTICE`
+
+**CI:**
+
+* ci: update `license-checker-action` (#54)
+* ci: improved workflow (pinning, license, node permission & on blocks, codeql) (#51)
+* ci: update `codecov@v4` w/ token (#44)
+
 ## 5.1.0 (Mar 25, 2024)
 
 **Features:**
diff --git a/package-lock.json b/package-lock.json
index 4a4f813..0942312 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@cordova/eslint-config",
-  "version": "6.0.0-dev",
+  "version": "6.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@cordova/eslint-config",
-      "version": "6.0.0-dev",
+      "version": "6.0.0",
       "license": "Apache-2.0",
       "dependencies": {
         "eslint": "^9.31.0",
diff --git a/package.json b/package.json
index 3d3c507..af46a16 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cordova/eslint-config",
-  "version": "6.0.0-dev",
+  "version": "6.0.0",
   "description": "Cordova ESLint Config",
   "main": "index.js",
   "scripts": {