diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c0cfdd..0660eb2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+## [v0.7.30](https://github.com/tencentyun/cos-go-sdk-v5/compare/v0.7.29...v0.7.30) - 2021-08-25
+
+add append and retry
+
+### Merged
+
+- Cos v4 dev [`#144`](https://github.com/tencentyun/cos-go-sdk-v5/pull/144)
+
+### Commits
+
+- add append && add retry [`6d06f34`](https://github.com/tencentyun/cos-go-sdk-v5/commit/6d06f3452d0a8b6f1f8f719edf2d80e0fcce4823)
+- add put with transport [`35642e5`](https://github.com/tencentyun/cos-go-sdk-v5/commit/35642e50731639c982bf3302e1088fc7963ae9bb)
+- Updated CHANGELOG.md [`a505960`](https://github.com/tencentyun/cos-go-sdk-v5/commit/a505960fe4cbb12bbf081315a73f97b880deeb1e)
+- update append [`df29a44`](https://github.com/tencentyun/cos-go-sdk-v5/commit/df29a448ac33860036422075a1e64d0bf3120c45)
+
 ## [v0.7.29](https://github.com/tencentyun/cos-go-sdk-v5/compare/v0.7.28...v0.7.29) - 2021-07-27
 
 update version