diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 34a3350a..3d3c5268 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.2.0"
+  ".": "4.2.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 846e93df..d9544833 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [4.2.1](https://github.com/H4ad/serverless-adapter/compare/v4.2.0...v4.2.1) (2024-02-29)
+
+
+### Bug Fixes
+
+* **response-stream:** fix response with no content doesn't correctly end the writable stream ([bded8cf](https://github.com/H4ad/serverless-adapter/commit/bded8cfe32a853529fea7334658709b12b2971e1))
+
+
+### Code Refactoring
+
+* **apollo-server-mutation:** better types for adapter ([79f3383](https://github.com/H4ad/serverless-adapter/commit/79f33833c4368282d421495b6f7a70a700bd06bb))
+* **response-stream:** avoid creating object on log while parsing headers ([1effcae](https://github.com/H4ad/serverless-adapter/commit/1effcaebf23e83188d4836693428f1953d0403be))
+
+
+### Tests
+
+* **all:** cleaning tests and fixing ts issues ([c3dcfff](https://github.com/H4ad/serverless-adapter/commit/c3dcfff58ac3bc29294337abd074c567724a8198))
+* **aws-stream:** add tests to cover [#206](https://github.com/H4ad/serverless-adapter/issues/206) ([c853149](https://github.com/H4ad/serverless-adapter/commit/c853149a6295f015b467825f20a60790cb346f65))
+
 ## [4.2.0](https://github.com/H4ad/serverless-adapter/compare/v4.1.0...v4.2.0) (2024-01-08)
 
 
diff --git a/package-lock.json b/package-lock.json
index 1177cd90..241dfbf5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@h4ad/serverless-adapter",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@h4ad/serverless-adapter",
-      "version": "4.2.0",
+      "version": "4.2.1",
       "license": "MIT",
       "devDependencies": {
         "@apollo/server": "4.10.0",
diff --git a/package.json b/package.json
index 59b689da..2f212610 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@h4ad/serverless-adapter",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "Run REST APIs and other web applications using your existing Node.js application framework (NestJS, Express, Koa, Hapi, Fastify and many others), on top of AWS, Azure, Digital Ocean and many other clouds.",
   "type": "module",
   "main": "./lib/index.cjs",