diff --git a/php-nginx/Dockerfile b/php-nginx/Dockerfile
index 2c71c68..a14c1c1 100644
--- a/php-nginx/Dockerfile
+++ b/php-nginx/Dockerfile
@@ -1,4 +1,4 @@
-FROM nginx:stable-alpine
+FROM nginx:1.21-alpine
 
 ENV WEBDIR /var/www/symfony/web
 ENV CONTROLLER_NAME app_dev