diff --git a/Dockerfile b/Dockerfile
index 46ed226e..a30fb556 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20201014
 MAINTAINER Wah Loon Keng <kengzwl@gmail.com>
 
 ENV DEBIAN_FRONTEND noninteractive