diff --git a/Dockerfile b/Dockerfile
index 18ac328..d282fc8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 MAINTAINER Terry Chen <seterrychen@gmail.com>
 
 ENV DEBIAN_FRONTEND noninteractive