diff --git a/proxy/Dockerfile b/proxy/Dockerfile
index 39e6962..cb39c62 100644
--- a/proxy/Dockerfile
+++ b/proxy/Dockerfile
@@ -1,4 +1,4 @@
-FROM nginx:1.9
+FROM nginx:1.18
 
 #  default conf for proxy service
 COPY ./default.conf /etc/nginx/conf.d/default.conf