diff --git a/deployment/stacks/application/docker-compose.yml b/deployment/stacks/application/docker-compose.yml
index f2d6640d..f5861380 100644
--- a/deployment/stacks/application/docker-compose.yml
+++ b/deployment/stacks/application/docker-compose.yml
@@ -1,4 +1,5 @@
 version: '3.8'
+# Docker Registry: registry.michaelschiemer.de (HTTPS via Traefik)
 
 services:
   # PHP-FPM Application Runtime