diff --git a/Dockerfile b/Dockerfile
index 95effa4..d813ef2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,8 @@ COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /usr/local/bin/
 
 ARG SPARK_VERSION=4.1.2
 
-RUN apt-get update && \
+RUN sed -i 's|deb.debian.org|mirrors.tuna.tsinghua.edu.cn|g' /etc/apt/sources.list.d/debian.sources && \
+    apt-get update && \
     apt-get install -y --no-install-recommends \
         curl \
         ca-certificates \