diff --git a/fontforge/Dockerfile b/fontforge/Dockerfile
index 6d65bf1..be9eebe 100644
--- a/fontforge/Dockerfile
+++ b/fontforge/Dockerfile
@@ -10,7 +10,7 @@
 #     fghj/fontforge
 
 # Base docker image
-FROM ubuntu:latest
+FROM ubuntu:16.04
 LABEL maintainer "Axel Svensson <foss@axelsvensson.com>"
 
 RUN  apt-get update \