diff --git a/docker/Dockerfile b/docker/Dockerfile
index 8a8c089c493baa0982fbd68e8fa815ed68ea3e45..2b83834a39485e5f3fbc519538e59643402aa081 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,8 +1,6 @@
 FROM ubuntu:16.04
 
 # Update source
-# Looks like mirrors.163.com does not work in xiaomi network
-# RUN sed -i 's/http:\/\/archive\.ubuntu\.com\/ubuntu\//http:\/\/mirrors\.163\.com\/ubuntu\//g' /etc/apt/sources.list
 RUN apt-get update -y
 
 ## Basic tools