-class TimestampsNotNull < ActiveRecord::Migration
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
+class TimestampsNotNull < ActiveRecord::Migration[4.2]
def up
ActiveRecord::Base.connection.tables.each do |t|
next if t == 'schema_migrations'