diff --git a/docs/contributing.rst b/docs/contributing.rst
index d7b8842..97e5c25 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -56,7 +56,7 @@ At this point, you should be able to see the Web UI at http://localhost:8000
 
 Once your session is up and running, you can make yourself a superuser account::
 
-    docker compose -f docker/docker-compose.yml exec web manage.py createsuperuser
+    docker compose -f docker/docker-compose.yml exec web python3 manage.py createsuperuser
 
 And you can run the tests inside your container::