diff --git a/CHANGELOG.md b/CHANGELOG.md
index e5c96c20..fdb28ef3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,27 @@
 # Changelog
+## [0.12.0](https://www.github.com/ethersphere/bee-js/compare/v0.11.0...v0.12.0) (2021-06-17)
+
+This is a compatibility release for the Bee 1.0.0-rc2. It also handles extended postage stamp information.
+
+### ⚠ BREAKING CHANGES
+
+* use string instead of bigint (#345)
+
+### Features
+
+* add folder and collection size check utility functions ([#349](https://www.github.com/ethersphere/bee-js/issues/349)) ([f289c81](https://www.github.com/ethersphere/bee-js/commit/f289c81ecb77c8754589d67c1b9ca03d379dc23a))
+* extend PostageBatch type and creation with new properties ([#350](https://www.github.com/ethersphere/bee-js/issues/350)) ([7695e27](https://www.github.com/ethersphere/bee-js/commit/7695e27bcac758c153609ba973830c0472e1e5c6))
+
+
+### Bug Fixes
+
+* add missing stream package with webpack ([#351](https://www.github.com/ethersphere/bee-js/issues/351)) ([a083a1b](https://www.github.com/ethersphere/bee-js/commit/a083a1b5bb98277db3ef15a80aa8044718fb00f5)), closes [#348](https://www.github.com/ethersphere/bee-js/issues/348)
+
+
+### Code Refactoring
+
+* use string instead of bigint ([#345](https://www.github.com/ethersphere/bee-js/issues/345)) ([358ca42](https://www.github.com/ethersphere/bee-js/commit/358ca4231595b9883aed0d8eade39da509cbb118))
+
 ## [0.11.0](https://www.github.com/ethersphere/bee-js/compare/v0.10.0...v0.11.0) (2021-06-09)
 
 This release mainly brings internal improvements as we have attacked head-on our backlog with outstanding issues. But several changes introduce breaking changes so be aware and continue reading on!
diff --git a/package-lock.json b/package-lock.json
index cc412c8f..deb34c89 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@ethersphere/bee-js",
-  "version": "0.11.0",
+  "version": "0.12.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@ethersphere/bee-js",
-      "version": "0.11.0",
+      "version": "0.12.0",
       "license": "BSD-3-Clause",
       "dependencies": {
         "axios": "^0.21.1",
diff --git a/package.json b/package.json
index cc32a799..c1420a76 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ethersphere/bee-js",
-  "version": "0.11.0",
+  "version": "0.12.0",
   "description": "Javascript client for Bee",
   "keywords": [
     "bee",