diff --git a/reverse_proxy/docker-compose.yaml b/reverse_proxy/docker-compose.yaml
index 8c50664..4ce8b50 100644
--- a/reverse_proxy/docker-compose.yaml
+++ b/reverse_proxy/docker-compose.yaml
@@ -1,3 +1,4 @@
+---
 services:
   nginx:
     image: nginxproxy/nginx-proxy:latest