Daniel K on "[Plugin: WordPress SEO by Yoast] "Missing required field updated" on rich snippet testing tool"

WordPress version: 3.5
WordPress SEO version: 1.3.4.3

Google Rich Snippet Testingtool is showing a warning when I test my blog posts: "Warning: Missing required field "updated"."

May this field should be added ;-)

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