Allow html comments with kses

How do I allow HTML comments (!-- HTML Comment --) when outptutting with wp_kses_post?

My current allow function is as follows:

function custom_wpkses_post_tags( $tags, $context ) {

    $allowed_atts = array(
        'align'      = true,
        'class'      = true,
        'type'       = true,
        'id'         = true,
        'dir'        = true,
        'lang'       = true,
        'style'      = true,
        'xml:lang'   = true,
        'src'        = true,
        'alt'        = true,
        'href'       = true,
        'rel'        = true,
        'rev'        = true,
        'target'     = true,
        'novalidate' = true,
        'type'       = true,
        'value'      = true,
        'name'       = true,
        'tabindex'   = true,
        'action'     = true,
        'method'     = true,
        'for'        = true,
        'width'      = true,
        'height'     = true,
        'data'       = true,
        'data-*'     = true,
        'title'      = true,
        'for'        = true
    );

    if ( 'post' === $context ) {
        $tags['form']     = $allowed_atts;
        $tags['label']    = $allowed_atts;
        $tags['select']   = $allowed_atts;
        $tags['option']   = $allowed_atts;
        $tags['input']    = $allowed_atts;
        $tags['textarea'] = $allowed_atts;
        $tags['iframe']   = $allowed_atts;
        $tags['script']   = $allowed_atts;
        $tags['style']    = $allowed_atts;
        $tags['strong']   = $allowed_atts;
        $tags['small']    = $allowed_atts;
        $tags['table']    = $allowed_atts;
        $tags['span']     = $allowed_atts;
        $tags['abbr']     = $allowed_atts;
        $tags['code']     = $allowed_atts;
        $tags['pre']      = $allowed_atts;
        $tags['div']      = $allowed_atts;
        $tags['img']      = $allowed_atts;
        $tags['h1']       = $allowed_atts;
        $tags['h2']       = $allowed_atts;
        $tags['h3']       = $allowed_atts;
        $tags['h4']       = $allowed_atts;
        $tags['h5']       = $allowed_atts;
        $tags['h6']       = $allowed_atts;
        $tags['ol']       = $allowed_atts;
        $tags['ul']       = $allowed_atts;
        $tags['li']       = $allowed_atts;
        $tags['em']       = $allowed_atts;
        $tags['hr']       = $allowed_atts;
        $tags['br']       = $allowed_atts;
        $tags['tr']       = $allowed_atts;
        $tags['td']       = $allowed_atts;
        $tags['p']        = $allowed_atts;
        $tags['a']        = $allowed_atts;
        $tags['b']        = $allowed_atts;
        $tags['i']        = $allowed_atts;
    }

    return $tags;

}