diff --git a/README.en.md b/README.en.md
index 3cb9394c6094b79a99d4018dc54c8012197efe34..5aba7963479e7dbebf49cfb01e1c06e8b0096bcc 100644
--- a/README.en.md
+++ b/README.en.md
@@ -16,6 +16,11 @@ This project has been tested with test suites of SQLAlchemy.
 
     > https://github.com/opengauss-mirror/openGauss-connector-python-psycopg2
 
+### NOTE
+
+Using unmatched psycopg2 may cause part of the autoescape test cases in
+ SQLAlchemy version 2.0+ failed.
+
 ## Installation
 
 ```
diff --git a/README.md b/README.md
index d683aac05a185e8590e89ebf5ac31da5d3d55974..e56e7cad885c6c571c18e83eb364a32176e0eb3d 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,8 @@
     > https://github.com/opengauss-mirror/openGauss-connector-python-psycopg2
 
 ### 注意：
-使用psycopg2 for opengauss会导致Sqlalchemy2.0部分autoescape相关测试用例不通过。
+
+使用不匹配的psycopg2会导致SQLAlchemy2.0部分autoescape相关测试用例不通过。
 
 若需要使用autoescape相关功能，请保证环境中正确安装openGauss，并且通过修改变量LD_LIBRARY_PATH保证pg_config来自openGauss。
 
diff --git a/opengauss_sqlalchemy/__init__.py b/opengauss_sqlalchemy/__init__.py
index fb0064036e455f90f7297fafe2c60b8c0b48eba9..39dbfa2a18d6d16b8577e1bb76c68baf59eae097 100644
--- a/opengauss_sqlalchemy/__init__.py
+++ b/opengauss_sqlalchemy/__init__.py
@@ -9,7 +9,7 @@
 from sqlalchemy.dialects import registry
 
 
-__version__ = "2.1.0"
+__version__ = "2.2.0"
 
 
 registry.register(