diff --git a/modules/openstack_project/files/zuul/layout.yaml b/modules/openstack_project/files/zuul/layout.yaml
index 54d4cc7f87..37f6600043 100644
--- a/modules/openstack_project/files/zuul/layout.yaml
+++ b/modules/openstack_project/files/zuul/layout.yaml
@@ -33,7 +33,7 @@ pipelines:
     manager: IndependentPipelineManager
     trigger:
       - event: ref-updated
-        ref: ^(?!refs/).*$
+        ref: ^(?!(devnull|refs/.*)).*$
 
   - name: publish
     manager: IndependentPipelineManager