[Plugin: WordPress SEO by Yoast] Adding URLs to the XML sitemap manually

Hi folks,

I’d like to add a new newsletter link to my XML Sitemap each month, something that the Yoast plugin doesn’t seem to pick up. Is there a way I can add these manually, while still letting the Yoast plugin generate the rest of the map each day?

Cheers,

Robin

http://wordpress.org/extend/plugins/wordpress-seo/