Not liking boyfriends friends

I honestly don't like one specific group of friends that my boyfriend hangs out with and are close to because they are all immature, uneducated and annoying. I've hung out with them on two different occasions and I honestly hated it. The conversations they have are not even interesting. He's been friends with these guys for over 10 years, longer than he's known me so I don't think his friendships with them will ever end but I'm starting to get fed up. I also feel like they are keeping him back from maturing.

What do you do when you don't like your mans friends