diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0453a94a8..24ca3af58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,14 @@ and Yorkie JS SDK adheres to [Semantic Versioning](https://semver.org/spec/v2.0.
 
 ## [Unreleased]
 
+### Changed
+
+- Update example version to v0.4.20 by @chacha912 in https://github.com/yorkie-team/yorkie-js-sdk/pull/822
+
+### Fixed
+
+- Prevent remote-change events in RealtimeSyncOff mode by @chacha912 in https://github.com/yorkie-team/yorkie-js-sdk/pull/824
+
 ## [0.4.20] - 2024-05-24
 
 ### Added
diff --git a/package.json b/package.json
index a54b62712..22e1eea80 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "yorkie-js-sdk",
-  "version": "0.4.20",
+  "version": "0.4.21-rc",
   "description": "Yorkie JS SDK",
   "main": "./dist/yorkie-js-sdk.js",
   "typings": "./dist/yorkie-js-sdk.d.ts",