diff --git a/Dockerfile b/Dockerfile
index 200f401..fb7e15c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ RUN  set -x \
     && apk add wqy-zenhei --update-cache --repository  http://dl-3.alpinelinux.org/alpine/edge/testing/ --allow-untrusted \
     && apk add --no-cache --virtual .build-deps build-base g++ gcc libxslt-dev python2-dev linux-headers \
     && apk add --no-cache pwgen git tzdata zlib-dev freetype-dev jpeg-dev  mariadb-dev postgresql-dev \
+    && python -m pip install --upgrade pip \
     && pip --no-cache-dir install -r requirements.txt \
     && pip --no-cache-dir install mysqlclient \
     && chmod +x docker_mrdoc.sh \