diff --git a/examples/playbook.yml b/examples/playbook.yml
index 7a697db..8e78387 100644
--- a/examples/playbook.yml
+++ b/examples/playbook.yml
@@ -1,3 +1,4 @@
+---
 - name: Install Designate Server
   hosts: designate_all
   user: root
diff --git a/releasenotes/notes/designate-1604-support-d397681dd302eda9.yaml b/releasenotes/notes/designate-1604-support-d397681dd302eda9.yaml
index 570bcc4..006b980 100644
--- a/releasenotes/notes/designate-1604-support-d397681dd302eda9.yaml
+++ b/releasenotes/notes/designate-1604-support-d397681dd302eda9.yaml
@@ -1,2 +1,3 @@
+---
 features:
   - The ``os-designate`` role now supports Ubuntu 16.04 and SystemD.
diff --git a/tests/ansible-role-requirements.yml b/tests/ansible-role-requirements.yml
index e4b95ec..41fae39 100644
--- a/tests/ansible-role-requirements.yml
+++ b/tests/ansible-role-requirements.yml
@@ -1,3 +1,4 @@
+---
 - name: apt_package_pinning
   src: https://git.openstack.org/openstack/openstack-ansible-apt_package_pinning
   scm: git
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index a2ad506..177a91b 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -1,3 +1,4 @@
+---
 # Copyright 2017, Rackspace US, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");