Need to create child theme in order to update theme?

Hi, do I need to create a child theme in order to update to the latest version of my theme? If so, what should I change in the style.css: /* Theme Name: Twenty Fourteen Child Theme URI: http://example.com/twenty-fourteen-child/ Description: Twenty Fourteen Child Theme Author: John Doe Author URI: http://example.com Template: twentyfourteen Version: 1.0.0 Tags: light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready Text Domain: twenty-fourteen-child */ /* =Theme customization starts here