diff --git a/playbooks/group_vars/zookeeper.yaml b/playbooks/group_vars/zookeeper.yaml
index 119f73a99b..cdbd79a75c 100644
--- a/playbooks/group_vars/zookeeper.yaml
+++ b/playbooks/group_vars/zookeeper.yaml
@@ -1,8 +1,8 @@
 iptables_extra_allowed_hosts:
-  - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nb01.opendev.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nb01.openstack.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nb02.openstack.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nb03.openstack.org'}
+  - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nb04.opendev.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nl01.openstack.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nl02.openstack.org'}
   - {'protocol': 'tcp', 'port': '2181', 'hostname': 'nl03.openstack.org'}