diff --git a/zuul.d/base-nested-switch.yaml b/zuul.d/base-nested-switch.yaml
index a353356..16d270f 100644
--- a/zuul.d/base-nested-switch.yaml
+++ b/zuul.d/base-nested-switch.yaml
@@ -4,7 +4,7 @@
     parent: whitebox-neutron-tempest-plugin-base
     abstract: true
     branches:
-      regex: ^(stable/(train|ussuri|victoria|wallaby|xena|yoga|zed)).*$
+      regex: ^(unmaintained|stable/(victoria|wallaby|xena|yoga|zed)).*$
       negate: true
     # Comment nodeset and vars to switch back to non nested nodes
     nodeset: devstack-single-node-centos-9-stream