diff --git a/etc/config-generator.conf b/etc/config-generator.conf
index 1a7d07115..977ff6734 100644
--- a/etc/config-generator.conf
+++ b/etc/config-generator.conf
@@ -26,4 +26,5 @@ namespace = oslo.messaging
 namespace = oslo.db
 namespace = oslo.log
 namespace = oslo.policy
+namespace = oslo.service.periodic_tasks
 namespace = oslo.service.service