Probably doesn't need them upgraded. Just needs the door hung so that the tab doesn't become engaged when the door is shut.
Although, deadbolts should just be standard these days. I can't imagine living in a home with a door that didn't have at least one deadbolt.
WHERE THE HECK DO YOU LIVE? Then again, Im in a very small town, with a pile of cops, and we all cling to our guns and religions, and we all have dogs too, haha. One deadbolt per door meets my needs...