diff --git a/iam/__version__.py b/iam/__version__.py
index 268300d..7a1faa9 100644
--- a/iam/__version__.py
+++ b/iam/__version__.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 
-__version__ = "1.2.0"
+__version__ = "1.2.1"
diff --git a/iam/utils.py b/iam/utils.py
index 16a4a6f..7e8e45f 100644
--- a/iam/utils.py
+++ b/iam/utils.py
@@ -83,6 +83,8 @@ def gen_perms_apply_data(system, subject, action_to_resources_list):
 
                     if topo_path:
                         for part in topo_path[1:-1].split("/"):
+                            # NOTE: old _bk_iam_path_ is like /set,1/host,2/
+                            # while the new _bk_iam_path_ is like /bk_cmdb,set,1/bk_cmdb,host,2/
                             node_parts = part.split(",")
                             rtype, rid = "", ""
                             if len(node_parts) == 2:
diff --git a/release.md b/release.md
index 3160696..d04a539 100644
--- a/release.md
+++ b/release.md
@@ -1,5 +1,15 @@
 版本日志
 ===============
+
+# v1.2.1
+
+- add: operator `string_contains` #68
+- update: 规范化所有操作符左值/右值, 并增加校验(校验失败直接False)
+- refactor: expression eval
+
+注意: 如果使用 RBAC 接入权限中心, 必须使用这个版本的 SDK(action.auth_type="rbac")
+
+
 # v1.2.0
 
 - support django 3.2