diff --git a/vault/Dockerfile b/vault/Dockerfile
index b67b631..ea776f4 100644
--- a/vault/Dockerfile
+++ b/vault/Dockerfile
@@ -1,5 +1,5 @@
 FROM golang:alpine as builder
-MAINTAINER Jessica Frazelle <jess@linux.com>
+LABEL maintainer="Jessica Frazelle <jess@linux.com>"
 
 ENV PATH /go/bin:/usr/local/go/bin:$PATH
 ENV GOPATH /go