Rss for unanswered topics

I’d like to get an rss feed only for the unanswered topics with a tag e.g. https://meta.discourse.org/tag/unsupported-install?max_posts=1
Is that possible?

Tried https://meta.discourse.org/tag/unsupported-install.rss?max_posts=1 but the unanswered filter wasn’t added.