diff --git a/src/docker/Dockerfile b/src/docker/Dockerfile
index 57c9230a..59aef697 100644
--- a/src/docker/Dockerfile
+++ b/src/docker/Dockerfile
@@ -8,7 +8,7 @@ RUN yum -y install unzip git gcc gcc-c++ make cmake bison openssl-devel mysql-de
     && pip3 install virtualenv -i https://mirrors.ustc.edu.cn/pypi/web/simple/ \
     && virtualenv venv4archer --python=python3.4 \
     && source venv4archer/bin/activate \
-    && git clone -b github https://github.com/hhyo/archer.git \
+    && git clone https://github.com/hhyo/archer.git \
     && pip3 install -r /opt/archer/src/docker/requirements.txt -i https://mirrors.ustc.edu.cn/pypi/web/simple/ \
     && cp /opt/archer/src/docker/pymysql/connections.py /opt/venv4archer/lib/python3.4/site-packages/pymysql/ \
     && cp /opt/archer/src/docker/pymysql/cursors.py /opt/venv4archer/lib/python3.4/site-packages/pymysql/ \