diff --git a/Dockerfile b/Dockerfile
index 0eea0d6..a3da1bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-From ubuntu:trusty
+From ubuntu:14.04.5
 MAINTAINER Simon Templer <simon@templer.cc>
 
 # Set noninteractive mode for apt-get