diff --git a/build.bat b/build.bat
index 874efa1..4fcd793 100644
--- a/build.bat
+++ b/build.bat
@@ -18,7 +18,7 @@ if exist ".venv\Scripts\activate.bat" (
 )
 
 echo === 安装依赖项 ===
-pip install -r requirements.txt
+pip install -i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple -r requirements.txt 
 if errorlevel 1 (
     echo [错误] pip 安装依赖失败！
     pause