diff --git a/Dockerfile b/Dockerfile
index 5f509b5..a4f0ee9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,6 @@
-FROM git.shork.ch/docker-images/alpine-edge:latest
+FROM git.shork.ch/docker-images/alpine-edge:true-edge
 
-RUN apk upgrade --no-cache && \
-    apk add --no-cache su-exec curl rsync && \
+RUN apk add --no-cache su-exec curl rsync && \
     adduser -D -u 1000 rsync
 
 RUN mkdir /data && \