diff --git a/README.md b/README.md
index d19d8f2ef4..a372ff08ea 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ This project is released under the [Apache 2.0 license](LICENSE).
 
 ## Changelog
 
-v0.20.0 was released in 12/10/2021.
+v0.20.1 was released in 12/14/2021.
 Please refer to [changelog.md](docs/changelog.md) for details and release history.
 
 ## Benchmark and model zoo
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 77a93cb9d9..792075d4c5 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -48,7 +48,7 @@ MMSegmentation 是一个基于 PyTorch 的语义分割开源工具箱。它是 O
 
 ## 更新日志
 
-最新的月度版本 v0.20.0 在 2021.12.10 发布。
+最新的月度版本 v0.20.1 在 2021.12.14 发布。
 如果想了解更多版本更新细节和历史信息，请阅读[更新日志](docs/changelog.md)。
 
 ## 基准测试和模型库
diff --git a/docs/changelog.md b/docs/changelog.md
index 192f3e32f2..6306757358 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,19 @@
 ## Changelog
 
+### V0.20.1 (12/14/2021)
+
+**Improvements**
+
+- Change options to cfg-options ([#1129](https://github.com/open-mmlab/mmsegmentation/pull/1129))
+
+
+**Bug Fixes**
+
+- Fix `<!-- [ABSTRACT] -->` in metafile. ([#1127](https://github.com/open-mmlab/mmsegmentation/pull/1127))
+- Fix correct `num_classes` of HRNet in `LoveDA` dataset ([#1136](https://github.com/open-mmlab/mmsegmentation/pull/1136))
+
+
+
 ### V0.20 (12/10/2021)
 
 **Highlights**
diff --git a/mmseg/version.py b/mmseg/version.py
index ffa55d38ae..a83843f8ee 100644
--- a/mmseg/version.py
+++ b/mmseg/version.py
@@ -1,6 +1,6 @@
 # Copyright (c) Open-MMLab. All rights reserved.
 
-__version__ = '0.20.0'
+__version__ = '0.20.1'
 
 
 def parse_version_info(version_str):