diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08bd250a8a..4a23fdb791 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [21.0.1]
+### Fixed
+- Fix issue where chainId key in AllCollectibles & AllCollectibleContracts is formatted differently in manual collectible add and detection add flows. ([#648](https://github.com/MetaMask/controllers/pull/648))
+
 ## [21.0.0]
 ### Added
 - **BREAKING**: Add openSeaEnabled preference ([#645](https://github.com/MetaMask/controllers/pull/645))
@@ -437,7 +441,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Removed
 - Remove shapeshift controller (#209)
 
-[Unreleased]: https://github.com/MetaMask/controllers/compare/v21.0.0...HEAD
+[Unreleased]: https://github.com/MetaMask/controllers/compare/v21.0.1...HEAD
+[21.0.1]: https://github.com/MetaMask/controllers/compare/v21.0.0...v21.0.1
 [21.0.0]: https://github.com/MetaMask/controllers/compare/v20.1.0...v21.0.0
 [20.1.0]: https://github.com/MetaMask/controllers/compare/v20.0.0...v20.1.0
 [20.0.0]: https://github.com/MetaMask/controllers/compare/v19.0.0...v20.0.0
diff --git a/package.json b/package.json
index a707bf4746..0b6c24a65d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@metamask/controllers",
-  "version": "21.0.0",
+  "version": "21.0.1",
   "description": "Collection of platform-agnostic modules for creating secure data models for cryptocurrency wallets",
   "keywords": [
     "MetaMask",