diff --git a/php-fpm/Dockerfile b/php-fpm/Dockerfile
index f1e66c7..3e4bac2 100644
--- a/php-fpm/Dockerfile
+++ b/php-fpm/Dockerfile
@@ -28,9 +28,9 @@ ENV DEBIAN_FRONTEND noninteractive
 ARG CHANGE_SOURCE=false
 RUN if [ ${CHANGE_SOURCE} = true ]; then \
     # Change application source from deb.debian.org to aliyun source
-    sed -i 's/deb.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list && \
-    sed -i 's/security.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list && \
-    sed -i 's/security-cdn.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list \
+    sed -i 's/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list && \
+    sed -i 's/security.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list && \
+    sed -i 's/security-cdn.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list \
 ;fi
 
 # always run apt update when start and after add new source list, then clean up at end.
diff --git a/workspace/Dockerfile b/workspace/Dockerfile
index 18eb306..ca34a56 100644
--- a/workspace/Dockerfile
+++ b/workspace/Dockerfile
@@ -28,9 +28,9 @@ ENV DEBIAN_FRONTEND noninteractive
 ARG CHANGE_SOURCE=false
 RUN if [ ${CHANGE_SOURCE} = true ]; then \
     # Change application source from deb.debian.org to aliyun source
-    sed -i 's/deb.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list && \
-    sed -i 's/security.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list && \
-    sed -i 's/security-cdn.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list \
+    sed -i 's/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list && \
+    sed -i 's/security.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list && \
+    sed -i 's/security-cdn.debian.org/mirrors.tuna.tsinghua.edu.cn/' /etc/apt/sources.list \
 ;fi
 
 # Start as root