diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 26520e77..65ed8710 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -7,3 +7,5 @@
       - openstack-python3-train-jobs-horizon
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
+    gate:
+      fail-fast: true