diff --git a/build/package/backup.Dockerfile b/build/package/backup.Dockerfile
index 3254490..424e676 100644
--- a/build/package/backup.Dockerfile
+++ b/build/package/backup.Dockerfile
@@ -1,8 +1,7 @@
 FROM alpine:latest
 LABEL maintainer="deepzz.qi@gmail.com"
 
-RUN sed -i "s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g" /etc/apk/repositories \
-    && apk add --update --no-cache tzdata ca-certificates mongodb-tools libc6-compat
+RUN apk add --update --no-cache tzdata ca-certificates mongodb-tools libc6-compat
 COPY README.md /app/README.md
 COPY CHANGELOG.md /app/CHANGELOG.md
 COPY LICENSE /app/LICENSE
diff --git a/build/package/eiblog.Dockerfile b/build/package/eiblog.Dockerfile
index 9ceaf5d..917b00c 100644
--- a/build/package/eiblog.Dockerfile
+++ b/build/package/eiblog.Dockerfile
@@ -1,8 +1,7 @@
 FROM alpine:latest
 LABEL maintainer="deepzz.qi@gmail.com"
 
-RUN sed -i "s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g" /etc/apk/repositories \
-    && apk add --update --no-cache tzdata
+RUN apk add --update --no-cache tzdata
 COPY README.md /app/README.md
 COPY CHANGELOG.md /app/CHANGELOG.md
 COPY LICENSE /app/LICENSE