diff --git a/Dockerfile b/Dockerfile
index 3df7b78..3927a5f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 FROM python:3.9-alpine
+ENV TZ=Asia/Shanghai
 RUN pip install flask
 COPY app.py /app.py
 CMD ["python", "/app.py"]