diff --git a/roles/jupyter/tasks/jupyter.yml b/roles/jupyter/tasks/jupyter.yml
index edba243db3e9d9283ed882acdd4c43f0830f75f9..591661f975e96cc6f02aa176d36e1e7631aac12c 100644
--- a/roles/jupyter/tasks/jupyter.yml
+++ b/roles/jupyter/tasks/jupyter.yml
@@ -73,8 +73,8 @@
       # This creates a volume for each user to store their notebooks. As an alternative,
       # we could bind-mount local filesystem paths (but something must create them first).
       c.DockerSpawner.volumes = {
-        'jupyterhub-user-{username}': '/home/jovyan/work'
-        'jupyterhub-shared': '/home/jovyan/work/shared'
+        'jupyterhub-user-{username}': '/home/jovyan/work',
+        'jupyterhub-shared': '/home/jovyan/work/shared',
       }
       c.DockerSpawner.network_name = 'jupyter'
       c.DockerSpawner.image = 'registry.git.autistici.org/ula/images/jupyter-notebook:main'