diff --git a/Dockerfile b/Dockerfile
index ef68d2f..9a07d0b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:14.04.3
+FROM ubuntu:16.04
 MAINTAINER Doro Wu <fcwu.tw@gmail.com>
 
 ENV DEBIAN_FRONTEND noninteractive