diff --git a/manifests/repo/debian/debian.pp b/manifests/repo/debian/debian.pp
index 7f7ae3b..2ddb040 100644
--- a/manifests/repo/debian/debian.pp
+++ b/manifests/repo/debian/debian.pp
@@ -55,7 +55,7 @@ class openstack_extras::repo::debian::debian(
   $deb_manage = pick($manage_whz, $manage_deb)
   if $deb_manage {
     exec { 'installing openstack-backports-archive-keyring':
-      command     => "/usr/bin/apt-get -y ${::openstack_extras::repo::debian::params::deb_required_packages}",
+      command     => "/usr/bin/apt-get -y --allow-unauthenticated ${::openstack_extras::repo::debian::params::deb_required_packages}",
       logoutput   => 'on_failure',
       tries       => 3,
       try_sleep   => 1,