diff --git a/zuul/layout.yaml b/zuul/layout.yaml
index be18b1328b..b29187b8a0 100755
--- a/zuul/layout.yaml
+++ b/zuul/layout.yaml
@@ -6763,9 +6763,9 @@ projects:
       - name: check-requirements
     check:
       - gate-craton-pep8-ubuntu-xenial
-      - gate-craton-tox-functional-ubuntu-xenial
     gate:
       - gate-craton-pep8-ubuntu-xenial
+    experimental:
       - gate-craton-tox-functional-ubuntu-xenial
 
   - name: openstack/craton-dashboard