diff --git a/etc/kayobe/bifrost.yml b/etc/kayobe/bifrost.yml
index d88eeab..a9860f9 100644
--- a/etc/kayobe/bifrost.yml
+++ b/etc/kayobe/bifrost.yml
@@ -7,6 +7,9 @@
 # DIB base OS element.
 #kolla_bifrost_dib_os_element:
 
+# DIB image OS release.
+#kolla_bifrost_dib_os_release:
+
 # List of DIB elements.
 #kolla_bifrost_dib_elements:
 
diff --git a/etc/kayobe/kolla.yml b/etc/kayobe/kolla.yml
index 43bed55..90c0f91 100644
--- a/etc/kayobe/kolla.yml
+++ b/etc/kayobe/kolla.yml
@@ -14,6 +14,13 @@
 # 'source'.
 #kolla_source_version:
 
+# URL of Kolla Ansible source code repository if type is 'source'.
+#kolla_ansible_source_url:
+
+# Version (branch, tag, etc.) of Kolla Ansible source code repository if type
+# is 'source'.
+#kolla_ansible_source_version:
+
 ###############################################################################
 # Kolla configuration.
 
@@ -83,6 +90,17 @@
 #kolla_enable_vmtp:
 #kolla_enable_watcher:
 
+###############################################################################
+# Passwords and credentials.
+
+# Dictionary containing default custom passwords to add or override in the
+# Kolla passwords file.
+#kolla_ansible_default_custom_passwords:
+
+# Dictionary containing custom passwords to add or override in the Kolla
+# passwords file.
+#kolla_ansible_custom_passwords:
+
 ###############################################################################
 # Dummy variable to allow Ansible to accept this file.
 workaround_ansible_issue_8743: yes