-class SerializedColumnsAcceptNull < ActiveRecord::Migration
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
+class SerializedColumnsAcceptNull < ActiveRecord::Migration[4.2]
def change
change_column :api_client_authorizations, :scopes, :text, null: true, default: '["all"]'
end