diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec74971..893562d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.2.0]
+
 ## [4.1.0]
 ### Added
 - Add named export of `PortDuplexStream` in addition to existing default export ([#57](https://github.com/MetaMask/extension-port-stream/pull/57))
@@ -48,7 +50,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **(BREAKING)** Remove `readable-stream` dependency ([#4](https://github.com/MetaMask/extension-port-stream/pull/4))
   - Consumers using this package in browser environments will have to bring their own Node.js stream polyfill.
 
-[Unreleased]: https://github.com/MetaMask/extension-port-stream/compare/v4.1.0...HEAD
+[Unreleased]: https://github.com/MetaMask/extension-port-stream/compare/v4.2.0...HEAD
+[4.2.0]: https://github.com/MetaMask/extension-port-stream/compare/v4.1.0...v4.2.0
 [4.1.0]: https://github.com/MetaMask/extension-port-stream/compare/v4.0.0...v4.1.0
 [4.0.0]: https://github.com/MetaMask/extension-port-stream/compare/v3.0.0...v4.0.0
 [3.0.0]: https://github.com/MetaMask/extension-port-stream/compare/v2.1.1...v3.0.0
diff --git a/package.json b/package.json
index e75da75..02b68ef 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "extension-port-stream",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "description": "A module for creating a node style stream over a WebExtension port object.",
   "main": "dist/index.js",
   "engines": {