diff --git a/adaptor/PCM-CORE/api/Dockerfile b/adaptor/PCM-CORE/api/Dockerfile
index ae22cbd6..f7ca3a2c 100644
--- a/adaptor/PCM-CORE/api/Dockerfile
+++ b/adaptor/PCM-CORE/api/Dockerfile
@@ -2,7 +2,7 @@ FROM alpine:3.16.2
 WORKDIR /home
 
 # 修改alpine源为上海交通大学
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.sjtug.sjtu.edu.cn/g' /etc/apk/repositories && \
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories && \
   apk update && \
   apk upgrade && \
   apk add --no-cache ca-certificates && update-ca-certificates && \