-class AddServiceHostAndServicePortAndServiceSslFlagToKeepDisks < ActiveRecord::Migration
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
+class AddServiceHostAndServicePortAndServiceSslFlagToKeepDisks < ActiveRecord::Migration[4.2]
def change
add_column :keep_disks, :service_host, :string
add_column :keep_disks, :service_port, :integer