diff --git a/Dockerfile b/Dockerfile
index 1fac4fe..a429595 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # Base image
 ARG ARCH=amd64
-FROM $ARCH/alpine:3.9
+FROM $ARCH/alpine:3.10
 
 # Prepare multi arch build
 COPY qemu-* /usr/bin/
@@ -8,9 +8,6 @@ COPY qemu-* /usr/bin/
 # Maintainer
 MAINTAINER Florian Schwab <me@ydkn.io>
 
-# upgrade system
-RUN apk --no-cache --no-progress upgrade
-
 # install packages
 RUN apk --no-cache --no-progress add avahi avahi-tools