diff --git a/heat/files/queens/heat.conf.Debian b/heat/files/queens/heat.conf.Debian
index 9d66c62..aec1427 100644
--- a/heat/files/queens/heat.conf.Debian
+++ b/heat/files/queens/heat.conf.Debian
@@ -1286,6 +1286,7 @@
 
 [keystone_authtoken]
 {%- set _data = server.identity %}
+{%- if 'cacert_file' not in _data.keys() %}{% do _data.update({'cacert_file': server.cacert_file}) %}{% endif %}
 {%- set auth_type = _data.get('auth_type', 'password') %}
 {%- include "oslo_templates/files/queens/keystonemiddleware/_auth_token.conf" %}
 {%- include "oslo_templates/files/queens/keystoneauth/_type_" + auth_type + ".conf" %}