jQuery 2.1.1

// Register Script
function jquery() {

	wp_deregister_script( 'jquery' );
	wp_register_script( 'jquery', '//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js', false, '2.1.3', true );
	wp_enqueue_script( 'jquery' );

}

// Hook into the 'wp_enqueue_scripts' action
add_action( 'wp_enqueue_scripts', 'jquery' );