diff --git a/ansible/roles/glance/tasks/bootstrap_service.yml b/ansible/roles/glance/tasks/bootstrap_service.yml
index 0b32234461..decc23177d 100644
--- a/ansible/roles/glance/tasks/bootstrap_service.yml
+++ b/ansible/roles/glance/tasks/bootstrap_service.yml
@@ -1,3 +1,4 @@
+---
 - name: Running Glance bootstrap container
   kolla_docker:
     action: "start_container"
diff --git a/ansible/roles/heat/tasks/bootstrap_service.yml b/ansible/roles/heat/tasks/bootstrap_service.yml
index 58a571c670..f3d874c1a5 100644
--- a/ansible/roles/heat/tasks/bootstrap_service.yml
+++ b/ansible/roles/heat/tasks/bootstrap_service.yml
@@ -1,3 +1,4 @@
+---
 - name: Running Heat bootstrap container
   kolla_docker:
     action: "start_container"
diff --git a/ansible/roles/ironic/tasks/bootstrap_service.yml b/ansible/roles/ironic/tasks/bootstrap_service.yml
index 863bdc02d2..986d1a6572 100644
--- a/ansible/roles/ironic/tasks/bootstrap_service.yml
+++ b/ansible/roles/ironic/tasks/bootstrap_service.yml
@@ -1,3 +1,4 @@
+---
 - name: Running Ironic bootstrap container
   kolla_docker:
     action: "start_container"
diff --git a/ansible/roles/kibana/tasks/pull.yml b/ansible/roles/kibana/tasks/pull.yml
index b97d0029d3..afe39cd3e6 100644
--- a/ansible/roles/kibana/tasks/pull.yml
+++ b/ansible/roles/kibana/tasks/pull.yml
@@ -1,3 +1,4 @@
+---
 - name: Pulling Kibana image
   kolla_docker:
     action: "pull_image"
diff --git a/ansible/roles/prechecks/vars/main.yml b/ansible/roles/prechecks/vars/main.yml
index 1dff865965..fd2237209d 100644
--- a/ansible/roles/prechecks/vars/main.yml
+++ b/ansible/roles/prechecks/vars/main.yml
@@ -1,3 +1,4 @@
+---
 docker_version_min: '1.10.0'
 docker_py_version_min: '1.6.0'
 ansible_version_min: '2.0.0'
diff --git a/docker/bifrost/bifrost-base/build_arg.yml b/docker/bifrost/bifrost-base/build_arg.yml
index c069fc2a33..b1384f793d 100644
--- a/docker/bifrost/bifrost-base/build_arg.yml
+++ b/docker/bifrost/bifrost-base/build_arg.yml
@@ -1,3 +1,4 @@
+---
 skip_bootstrap: true
 skip_start: true
 install_dib: true