diff --git a/Dockerfile b/Dockerfile
index c50d0f0..a44e4d1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Base-Image
-FROM ubuntu:18.04
+FROM docker.io/library/ubuntu:18.04
 
 # Environment
 ENV CUPS_ADMIN_USER=print