[Rails] Twitter and Facebook Integration

I am trying to keep an old rails site maintained. By old, I mean Ruby on Rails 2.1. It used to have Twitter and Facebook authentication, but they are broken now. I'm not much of a rails dev so I could use some advice on going about fixing them.

For Twitter, it's using the old Twitter4r gem. I believe this has been broken ever since Twitter when OAuth only. Yeah, that long.

For Facebook, it's using a gem called facebooker. I updated that to 1.0.13 back in May, and it's still busted.

I'm assuming I will have to integrate completely new gems to fix functionality. What gems should I look at?

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