get_template_directory_uri always returns the parent theme’s URI. From the docs: In the event a child theme is being used, the parent theme directory URI will be returned You probably want get_stylesheet_directory_uri. add_action(‘wp_enqueue_scripts’, ‘wpse174502_styles’, PHP_INT_MAX); function wpse174502_styles() { wp_enqueue_script(‘bootstrap-js’, get_stylesheet_directory_uri().’/bootstrap/js/bootstrap.min.js’, array(‘jquery’), NULL, true); wp_enqueue_style(‘bootstrap-css’, get_stylesheet_directory_uri().’/bootstrap/css/bootstrap.min.css’, false, NULL, ‘all’); } Whenever you’re debugging enqueues be sure to… … Read more