diff --git a/Dockerfile b/Dockerfile
index c6b2222..bf1bbbc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.4
+FROM alpine:3.7
 RUN apk --no-cache add curl ca-certificates bash && \
     curl -Lo /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && \
     chmod +x /usr/local/bin/kubectl