diff --git a/config/zuul/layout.yaml b/config/zuul/layout.yaml
index ceba69a5..2f3d2b33 100644
--- a/config/zuul/layout.yaml
+++ b/config/zuul/layout.yaml
@@ -134,6 +134,7 @@ jobs:
       - all-files-match-any:
           - ^doc/.*$
           - ^.*\.rst$
+          - ^.*unit/.*
   - name: ^tempest-sahara.*$
     branch: ^(master|stable/liberty)$
     skip-if: