diff --git a/ansible/roles/magnum/templates/magnum.conf.j2 b/ansible/roles/magnum/templates/magnum.conf.j2
index aee0087734..30be2d18eb 100644
--- a/ansible/roles/magnum/templates/magnum.conf.j2
+++ b/ansible/roles/magnum/templates/magnum.conf.j2
@@ -11,6 +11,7 @@ transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}
 [api]
 port = {{ magnum_api_port }}
 host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
+workers = {{ openstack_service_workers }}
 {% endif %}
 
 [oslo_policy]