diff --git a/Dockerfile b/Dockerfile
index 0e198d6..d2bc2b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@ FROM alpine:3.8
 
 LABEL maintainer="Peter Dave Hello <hsu@peterdavehello.org>"
 LABEL name="tor-socks-proxy"
+LABEL version="latest"
 
 RUN echo '@edge http://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories && \
     apk -U upgrade && \