diff --git a/Dockerfile b/Dockerfile
index c1081dd..1729ee5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-FROM alpine:3.7
+FROM alpine:latest
 
 EXPOSE 8118 9050
 
-RUN apk --update add privoxy tor runit tini
+RUN apk --no-cache add privoxy tor runit tini
 
 COPY service /etc/service/