diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66ad4d5..f352e4b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [4.2.1] - 2020-09-22
+
+### Changed
+
+- Specify publish files ([#30](https://github.com/MetaMask/eth-json-rpc-filters/pull/30))
+
 ## [4.2.0] - 2020-09-22
 
 ### Changed
@@ -14,4 +20,5 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
   - `json-rpc-engine@5.3.0`
   - `eth-json-rpc-middleware@6.0.0`
 
-[Unreleased]:https://github.com/MetaMask/eth-json-rpc-filters/compare/v4.2.0...HEAD
+[Unreleased]:https://github.com/MetaMask/eth-json-rpc-filters/compare/v4.2.1...HEAD
+[4.2.1]:https://github.com/MetaMask/eth-json-rpc-filters/compare/v4.2.0...v4.2.1
diff --git a/package.json b/package.json
index 4344a00..ed5b405 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eth-json-rpc-filters",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "[json-rpc-engine](https://github.com/kumavis/json-rpc-engine) middleware implementing ethereum filter methods. Backed by an [eth-block-tracker](https://github.com/MetaMask/eth-block-tracker) and web3 provider interface (`web3.currentProvider`).",
   "main": "index.js",
   "scripts": {