diff --git a/Dockerfile b/Dockerfile
index 23c705e..246ee71 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.7
-MAINTAINER Sebastian Hugentobler <sebastian@vanwa.ch>
+LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"
 
 ENV S6_OVERLAY_VERSION=v1.21.2.2