diff --git a/requirements.txt b/requirements.txt
index 5fd5fdc8..431cfb40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,5 @@
+-i https://pypi.tuna.tsinghua.edu.cn/simple
+
 pandas
 python_Levenshtein
 pywin32