diff --git a/service/files/defaults.yaml b/service/files/defaults.yaml
index 32a2545..dbfb2bc 100644
--- a/service/files/defaults.yaml
+++ b/service/files/defaults.yaml
@@ -21,6 +21,11 @@ configs:
     fernet_key: "ZAabsQIXsSW7Ez52UZRqUXDz87y9+R+mbxVZ38gRmjg="
     credential_key: "2jjLrgOLvI-wj7g-8058SSCw0-ZnL4Ghg5cLuBirxL8="
 
+    notifications:
+      enable: false
+      # format can be basic or cadf:
+      format: cadf
+
   openstack:
     user_password: password
     user_name: admin
diff --git a/service/files/keystone.conf.j2 b/service/files/keystone.conf.j2
index b51eb84..5104bc5 100644
--- a/service/files/keystone.conf.j2
+++ b/service/files/keystone.conf.j2
@@ -3,6 +3,9 @@ debug = {{ keystone.debug }}
 use_syslog = False
 use_stderr = True
 max_token_size = 255
+{% if keystone.notifications.enable %}
+notification_format = {{ keystone.notifications.format }}
+{% endif %}
 
 [database]
 connection = mysql+pymysql://{{ keystone.db.username }}:{{ keystone.db.password }}@{{ address(service.database) }}/{{ keystone.db.name }}
@@ -22,3 +25,10 @@ provider = fernet
 
 [assignment]
 driver = sql
+
+{% if keystone.notifications.enable %}
+{# This section should be updated after https://review.openstack.org/#/c/419995/ is merged #}
+[oslo_messaging_notifications]
+driver = messagingv2
+transport_url = rabbit://{{ rabbitmq.user }}:{{ rabbitmq.password }}@{{ address('rabbitmq', rabbitmq.port) }}
+{% endif %}