unable to install in rails 3.1.1

[tralles]

i like to install make_flaggable in rails 3.1.1. but i get this error:

Fetching git://github.com/medihack/make_flaggable.git
Fetching source index for http://rubygems.org/
Bundler could not find compatible versions for gem "activerecord":
In snapshot (Gemfile.lock):
activerecord (3.1.1)

In Gemfile:
make_flaggable depends on
activerecord (~> 3.0.0)

Running bundle update will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

[ghost]

you can use this fork with rails 3.1.x
https://github.com/jaimeiniesta/make_flaggable

[ericdfields]

What's blocking a merge? I'd like to help any way I can with making the released gem compatible.

[AlJohri]

+1 to @ericdfields comment. I'd love to help in any way as well. Perhaps transfer the repository to someone else?