diff --git a/README.MD b/README.MD
index 72c0812c918ecd53b3c835a863e88b3cd9be4f9e..8dc040b5abd3417c8dd61f3d5d42f4f46e93b1b0 100644
--- a/README.MD
+++ b/README.MD
@@ -325,7 +325,7 @@ resources/META-INF/services/org.apache.dubbo.rpc.Filter
 
     比赛使用的特定版本 dubbo, 需要手动安装依赖。
     ```bash
-    git clone https://code.aliyun.com/middlewarerace2019/dubbo-internal
+    git clone https://code.aliyun.com/middlewarerace2019/dubbo-internal.git
     mvn clean install -Dmaven.test.skip=true
     ```