diff --git a/dockerfiles/Dockerfile b/dockerfiles/Dockerfile
index 95ca3b2..1df4a42 100644
--- a/dockerfiles/Dockerfile
+++ b/dockerfiles/Dockerfile
@@ -1,5 +1,5 @@
 # Hydra Container
-FROM ubuntu:14.04
+FROM ubuntu:trusty-20190515
 MAINTAINER BlueT - Matthew Lien - 練喆明 "BlueT@BlueT.org"
 
 ENV DEBIAN_FRONTEND noninteractive