diff --git a/Dockerfile b/Dockerfile
index 5add3ca..f2b8971 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ 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 && \
+RUN echo '@edge https://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories && \
     apk -U upgrade && \
     apk -v add tor@edge curl && \
     chmod 700 /var/lib/tor && \