diff --git a/{{cookiecutter.project_slug}}/production.yml b/{{cookiecutter.project_slug}}/production.yml
index bbed09af8..93b61b134 100644
--- a/{{cookiecutter.project_slug}}/production.yml
+++ b/{{cookiecutter.project_slug}}/production.yml
@@ -38,7 +38,7 @@ services:
     depends_on:
       - django
     volumes:
-      - production_traefik:/etc/traefik/acme:Z
+      - production_traefik:/etc/traefik/acme:z
     ports:
       - "0.0.0.0:80:80"
       - "0.0.0.0:443:443"