diff --git a/Dockerfile b/Dockerfile
index 1aaf217..92b6b5b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.7.7-slim-stretch
+FROM python:3.7.16
 ENV PYTHONUNBUFFERED 1
 RUN sed -i s@/deb.debian.org/@/mirrors.aliyun.com/@g /etc/apt/sources.list
 RUN cat /etc/apt/sources.list