diff --git a/ansible/group_vars/omero-hosts.yml b/ansible/group_vars/omero-hosts.yml
index e1485165..1cf0e2bd 100644
--- a/ansible/group_vars/omero-hosts.yml
+++ b/ansible/group_vars/omero-hosts.yml
@@ -112,6 +112,7 @@ omero_server_python_addons:
 - omero-metadata==0.13.0
 - omero-upload==0.4.0
 - omero-rois==0.3.0
+- ome-zarr-py==0.11.0
 
 omero_server_config_set:
   omero.db.poolsize: 25