diff --git a/Dockerfile b/Dockerfile
index c69f73b..2563a7c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,8 +8,9 @@ WORKDIR /app
 ENV TZ=Asia/Shanghai
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
-# 使用阿里云镜像源
-RUN echo "deb https://mirrors.aliyun.com/debian/ bookworm main contrib non-free non-free-firmware" > /etc/apt/sources.list && \
+# 使用阿里云镜像源（完全替换所有源）
+RUN rm -f /etc/apt/sources.list.d/* && \
+    echo "deb https://mirrors.aliyun.com/debian/ bookworm main contrib non-free non-free-firmware" > /etc/apt/sources.list && \
     echo "deb https://mirrors.aliyun.com/debian/ bookworm-updates main contrib non-free non-free-firmware" >> /etc/apt/sources.list && \
     echo "deb https://mirrors.aliyun.com/debian-security bookworm-security main contrib non-free non-free-firmware" >> /etc/apt/sources.list