diff --git a/Dockerfile b/Dockerfile
index 2175cc5..3868d4d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ WORKDIR /app
 
 COPY requirements.txt .
 
-RUN pip install -r requirements.txt --no-cache-dir
+RUN pip install -r requirements.txt --no-cache-dir -i https://pypi.tuna.tsinghua.edu.cn/simple
 
 ENV TZ=Asia/Shanghai