class AddTimeZoneToDefaultDatetimes < ActiveRecord::Migration[4.2] def change change_column_default :users, :password_changed_at, DateTime.new(2015, 1, 1, 1, 1, 1, '+00:00') change_column_default :locks, :locked_until, DateTime.new(2000, 1, 1, 1, 1, 1, '+00:00') end end