diff --git a/ansible/roles/mistral/templates/mistral.conf.j2 b/ansible/roles/mistral/templates/mistral.conf.j2
index c2a051b3ae..76080d50f3 100644
--- a/ansible/roles/mistral/templates/mistral.conf.j2
+++ b/ansible/roles/mistral/templates/mistral.conf.j2
@@ -13,6 +13,7 @@ transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}
 [api]
 host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
 port = {{ mistral_api_port }}
+api_workers = {{ openstack_service_workers }}
 {% endif %}
 
 [database]