diff --git a/modules/openstack_project/manifests/gerrit.pp b/modules/openstack_project/manifests/gerrit.pp
index c31ed36d20..69d1aa188a 100644
--- a/modules/openstack_project/manifests/gerrit.pp
+++ b/modules/openstack_project/manifests/gerrit.pp
@@ -30,6 +30,8 @@ class openstack_project::gerrit (
   $email = '',
   $database_poollimit = '',
   $container_heaplimit = '',
+  $gc_start_time = '',
+  $gc_interval = '',
   $core_packedgitopenfiles = '',
   $core_packedgitlimit = '',
   $core_packedgitwindowsize = '',
@@ -128,6 +130,8 @@ class openstack_project::gerrit (
     openidssourl                        => 'https://login.launchpad.net/+openid',
     database_poollimit                  => $database_poollimit,
     container_heaplimit                 => $container_heaplimit,
+    gc_start_time                       => $gc_start_time,
+    gc_interval                         => $gc_interval,
     core_packedgitopenfiles             => $core_packedgitopenfiles,
     core_packedgitlimit                 => $core_packedgitlimit,
     core_packedgitwindowsize            => $core_packedgitwindowsize,
diff --git a/modules/openstack_project/manifests/review.pp b/modules/openstack_project/manifests/review.pp
index 4028945e8f..32153fe21a 100644
--- a/modules/openstack_project/manifests/review.pp
+++ b/modules/openstack_project/manifests/review.pp
@@ -108,6 +108,8 @@ class openstack_project::review (
       # 1 + 100 + 9 + 2 + 2 + 25 => 139(rounded up)
     database_poollimit                  => '150',
     container_heaplimit                 => '12g',
+    gc_start_time                       => '4:30',
+    gc_interval                         => '1 day',
     core_packedgitopenfiles             => '4096',
     core_packedgitlimit                 => '400m',
     core_packedgitwindowsize            => '16k',