diff --git a/templates/docker-compose.yml.twig b/templates/docker-compose.yml.twig
index 3cfbdb49531dbde26e4e44d50e8696c58c825556..25e534cea6c8fbd1d8a37dfd8895611807cfa427 100644
--- a/templates/docker-compose.yml.twig
+++ b/templates/docker-compose.yml.twig
@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
   mariadb:
@@ -204,3 +204,8 @@ services:
     volumes:
       - files:/mnt/files
 {% endif %}
+
+networks:
+  default:
+    external:
+      name: traefik_{{ projectname }}