diff --git a/drone/Dockerfile b/drone/Dockerfile
index 8d42fe2..5450dba 100644
--- a/drone/Dockerfile
+++ b/drone/Dockerfile
@@ -1,7 +1,7 @@
 FROM alpine:latest
 ARG E5SubBotFile
 ENV TIME_ZONE=Asia/Shanghai
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && apk update && apk add tzdata \
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories && apk update && apk add tzdata \
     && ln -snf /usr/share/zoneinfo/$TIME_ZONE /etc/localtime && echo $TIME_ZONE > /etc/timezone
 WORKDIR /root
 ADD ${E5SubBotFile} /root/