diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 37501d1..4d20436 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "3.0.5"
+    ".": "4.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ff199c..eed4a1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [4.0.0](https://github.com/humanwhocodes/env/compare/v3.0.5...v4.0.0) (2024-12-02)
+
+
+### ⚠ BREAKING CHANGES
+
+* Adds `engines.node` field in `package.json` with value of `^16.20.0 || ^18.0.0 || ^20.0.0 || ^22.0.0`. Versions which do not satisfy this range are unsupported.
+
+### Features
+
+* establish baseline Node.js version support ([#184](https://github.com/humanwhocodes/env/issues/184)) ([8600392](https://github.com/humanwhocodes/env/commit/8600392de65b0d986515855144b9b280e78f2984))
+
 ## [3.0.5](https://github.com/humanwhocodes/env/compare/v3.0.4...v3.0.5) (2024-06-11)
 
 
diff --git a/package-lock.json b/package-lock.json
index 074027f..a80253c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@humanwhocodes/env",
-  "version": "3.0.5",
+  "version": "4.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@humanwhocodes/env",
-      "version": "3.0.5",
+      "version": "4.0.0",
       "license": "BSD-3-Clause",
       "devDependencies": {
         "@eslint/js": "^9.0.0",
diff --git a/package.json b/package.json
index 8be8900..44bd11d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@humanwhocodes/env",
-  "version": "3.0.5",
+  "version": "4.0.0",
   "description": "A utility to verify that environment variables exist.",
   "type": "module",
   "main": "dist/env.cjs",