diff --git a/Dockerfile b/Dockerfile
index af737cf..7b86fc2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bullseye
+FROM debian:buster
 LABEL maintainer="Miao Wang <miao.wang@tuna.tsinghua.edu.cn>"
 
 RUN apt-get update && \