diff --git a/README.md b/README.md
index a098a17..b26acd8 100644
--- a/README.md
+++ b/README.md
@@ -4,15 +4,15 @@
 </p>
 
 <p align="center">
-    <img src ="https://img.shields.io/badge/version-4.8-blueviolet.svg"/>
-    <img src ="https://img.shields.io/badge/platform-windows|linux-yellow.svg"/>
+    <img src ="https://img.shields.io/badge/version-4.8.0-blueviolet.svg"/>
+    <img src ="https://img.shields.io/badge/platform-linux-yellow.svg"/>
     <img src ="https://img.shields.io/badge/python-3.7-blue.svg" />
     <img src ="https://img.shields.io/github/license/vnpy/vnpy.svg?color=orange"/>
 </p>
 
 ## 说明
 
-基于飞鼠4.8版本封装开发的linux接口(暂不支持windows)。
+基于飞鼠柜台的4.8版本API封装开发的交易接口，只支持Linux系统。
 
 ## 安装
 
@@ -60,6 +60,7 @@ def main():
 if __name__ == "__main__":
     main()
 ```
-## 连接
 
-连接前请先修改libcrypto.so为libcrypto.so.10，libssl.so为libssl.so.10。
\ No newline at end of file
+## 注意
+
+连接前请先修改libcrypto.so为libcrypto.so.10，libssl.so为libssl.so.10。
diff --git a/setup.cfg b/setup.cfg
index a00cef0..384bf24 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = vnpy_sgit
-version = 4.8
+version = 4.8.0
 url = https://www.vnpy.com
 license = MIT
 author = Xiaoyou Chen
diff --git a/vnpy_sgit/gateway/sgit_gateway.py b/vnpy_sgit/gateway/sgit_gateway.py
index 5c0db5e..08f324d 100644
--- a/vnpy_sgit/gateway/sgit_gateway.py
+++ b/vnpy_sgit/gateway/sgit_gateway.py
@@ -2,7 +2,7 @@
 import sys
 import pytz
 from datetime import datetime
-from typing import Any, Dict, List
+from typing import Dict, List
 
 from ..api import (
     MdApi,