diff --git a/modules/openstack_project/manifests/wheel_mirror_slave.pp b/modules/openstack_project/manifests/wheel_mirror_slave.pp
index f1bb7d7656..92c7aab12e 100644
--- a/modules/openstack_project/manifests/wheel_mirror_slave.pp
+++ b/modules/openstack_project/manifests/wheel_mirror_slave.pp
@@ -40,6 +40,7 @@ class openstack_project::wheel_mirror_slave (
     jenkins_gitemail    => $jenkins_gitemail,
     project_config_repo => $project_config_repo,
     afs                 => true,
+    thin                => true,
   }
 
   # Create a working directory for the wheel slave, and give it to jenkins to