diff --git a/iam/__version__.py b/iam/__version__.py
index 97ab618..3f624cb 100644
--- a/iam/__version__.py
+++ b/iam/__version__.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 
-__version__ = "1.1.19"
+__version__ = "1.1.20"
diff --git a/release.md b/release.md
index 9e7af8a..4647feb 100644
--- a/release.md
+++ b/release.md
@@ -1,5 +1,11 @@
 版本日志
 ===============
+# v1.1.20
+
+- bugfix: 修复 iam sdk 拷贝到本地使用后执行 iam_makemigrations 报错的问题
+- update: docs/usage.md
+- add: ResourceProvider添加search_instance抽象方法
+
 # v1.1.19
 
 - bugfix: iam migration via apigateway should not use settings.BK_IAM_INNER_HOST