diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fb8ef98..cc4eb89c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,14 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+#### [v0.9.4](https://github.com/oceanprotocol/ocean.js/compare/v0.9.3...v0.9.4)
+
+- gas cost optimisations [`#420`](https://github.com/oceanprotocol/ocean.js/pull/420)
+
 #### [v0.9.3](https://github.com/oceanprotocol/ocean.js/compare/v0.9.1...v0.9.3)
 
+> 27 October 2020
+
 - update bpool creation gas estimate [`#416`](https://github.com/oceanprotocol/ocean.js/pull/416)
 - Bump @types/node from 14.14.3 to 14.14.5 [`#415`](https://github.com/oceanprotocol/ocean.js/pull/415)
 - Bump @typescript-eslint/parser from 4.5.0 to 4.6.0 [`#413`](https://github.com/oceanprotocol/ocean.js/pull/413)
@@ -13,8 +19,8 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 - Bump @typescript-eslint/eslint-plugin from 4.5.0 to 4.6.0 [`#412`](https://github.com/oceanprotocol/ocean.js/pull/412)
 - fix args names [`#411`](https://github.com/oceanprotocol/ocean.js/pull/411)
 - Release v0.9.2 [`19c05d5`](https://github.com/oceanprotocol/ocean.js/commit/19c05d512d4eae265c96055cb6de6e9b158c4eb8)
+- Release 0.9.3 [`e0bbcd1`](https://github.com/oceanprotocol/ocean.js/commit/e0bbcd101f48a50c895cc958125f31162d17fb7c)
 - Update PoolFactory.ts [`2b810ac`](https://github.com/oceanprotocol/ocean.js/commit/2b810ac6a55f18f411ecfad56aa01dd73a6057d5)
-- Update PoolFactory.ts [`4c1c4d0`](https://github.com/oceanprotocol/ocean.js/commit/4c1c4d0f884323fe54a5584cce12d2b2656f3519)
 
 #### [v0.9.1](https://github.com/oceanprotocol/ocean.js/compare/v0.9.0...v0.9.1)
 
diff --git a/package-lock.json b/package-lock.json
index ac0e391f..45bd62ca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@oceanprotocol/lib",
-  "version": "0.9.3",
+  "version": "0.9.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 1c108d64..5e8ad208 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@oceanprotocol/lib",
-  "version": "0.9.3",
+  "version": "0.9.4",
   "description": "JavaScript client library for Ocean Protocol",
   "main": "./dist/node/lib.js",
   "typings": "./dist/node/lib.d.ts",