diff --git a/Dockerfile b/Dockerfile
index b76adcc63..082604d2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
 FROM alpine:latest
 MAINTAINER Miek Gieben <miek@miek.nl> @miekg
 
-RUN apk --update add bind-tools && rm -rf /var/cache/apk/*
+# only need ca-certificates & openssl if want to use https_google
+RUN apk --update add bind-tools ca-certificates openssl && update-ca-certificates && rm -rf /var/cache/apk/*
 
 ADD coredns /coredns