diff --git a/etc/nova/nova-config-generator.conf b/etc/nova/nova-config-generator.conf
index 8b7fd3bec85d..2f5562c83622 100644
--- a/etc/nova/nova-config-generator.conf
+++ b/etc/nova/nova-config-generator.conf
@@ -14,6 +14,7 @@ namespace = oslo.service.service
 namespace = oslo.middleware
 namespace = oslo.concurrency
 namespace = oslo.reports
+namespace = oslo.versionedobjects
 namespace = keystonemiddleware.auth_token
 namespace = osprofiler
 namespace = os_vif