diff --git a/Dockerfile b/Dockerfile
index c8e5c0e..1814d1e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ WORKDIR /app
 
 COPY requirements.txt .
 
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
 
 COPY . .