diff --git a/Dockerfile b/Dockerfile
index 0d567c3..1a277af 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,9 +3,10 @@ MAINTAINER Justin Wong <yuzhi.wang@tuna.tsinghua.edu.cn>
 
 RUN apt-get update && \
         apt-get install -y wget curl rsync lftp git jq python3-dev python3-pip yum-utils createrepo aria2 ack composer php-curl php-zip
-        
-RUN STATIC_DEPS=true pip3 install pyquery
-RUN pip3 install requests[socks] pyyaml gsutil awscli
+
+RUN pip3 install --upgrade pip        
+RUN STATIC_DEPS=true python3 -m pip install pyquery
+RUN python3 -m pip install requests[socks] pyyaml gsutil awscli
 
 RUN cd /usr/local && git clone --depth 1 https://github.com/tuna/composer-mirror.git && cd composer-mirror && composer i
 COPY composer-mirror.config.php /usr/local/composer-mirror/config.php