diff --git a/Dockerfile b/Dockerfile
index e7c1d2a..39bd746 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,12 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked,id=apt-cache-$TARGET
     <<EOS
 set -ex
 pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
+if [ -f /etc/apt/sources.list.d/debian.sources ]; then
+  sed -i 's|deb.debian.org|mirrors.tuna.tsinghua.edu.cn|g; s|security.debian.org|mirrors.tuna.tsinghua.edu.cn|g' /etc/apt/sources.list.d/debian.sources
+fi
+if [ -f /etc/apt/sources.list ]; then
+  sed -i 's|deb.debian.org|mirrors.tuna.tsinghua.edu.cn|g; s|security.debian.org|mirrors.tuna.tsinghua.edu.cn|g' /etc/apt/sources.list
+fi
 apt-get update
 apt-get install -y --no-install-recommends \
   ca-certificates \