diff --git a/Dockerfile b/Dockerfile
index 3ab71e5..682f413 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:latest
 
-RUN apk add bash openvpn openresolv aria2
+RUN apk --no-cache --update add bash openvpn openresolv aria2
 COPY start-openvpn.sh /usr/local/bin/start-openvpn.sh
 RUN chmod +x /usr/local/bin/start-openvpn.sh
 ENTRYPOINT [ "start-openvpn.sh" ]