diff --git a/Dockerfile b/Dockerfile
index cb44ba0..59616f4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM alpine:latest
 
 WORKDIR /app
 
-RUN apk --no-cache add tini avahi && rm -rf /etc/avahi/services/*
+RUN apk --no-cache upgrade && apk --no-cache add tini avahi && rm -rf /etc/avahi/services/*
 COPY avahi-daemon.conf /etc/avahi/
 
 CMD ["tini", "--", "avahi-daemon"]