diff --git a/CHANGELOG.md b/CHANGELOG.md
index e34cdeb..5b5603f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 # Changelog
 
 -----------------------------------------------
+[0.2.1] - 2020.12.23
+
+* Fix: Missing null check.
+* Fix: change parameter handle to number.
+
 [0.2.0] - 2020.11.11
 
 * Change FlutterCallKeep as a singleton.
diff --git a/pubspec.yaml b/pubspec.yaml
index 65a568b..37d7c59 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: callkeep
 description: iOS CallKit framework and Android ConnectionService for Flutter.
-version: 0.2.0
+version: 0.2.1
 author: duanweiwei1982@gmail.com
 homepage: https://github.com/flutter-webrtc/callkeep