diff --git a/Dockerfile b/Dockerfile
index a523272..a80f166 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:14.04
+FROM ubuntu:trusty-20190515
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update && apt-get upgrade -y