Error installing 'undefined method'

[jonasdagefoerde]

Hi,
after running

brew install vagrant-completion

I get the following error

Error: undefined method `homepage' for VagrantCompletion:Class
Please report this bug:
    https://github.com/Homebrew/homebrew/wiki/troubleshooting
/usr/local/Library/Taps/homebrew/homebrew-completions/vagrant-completion.rb:2

What do I need to do to get bash-completion working for vagrant?

Cheers
Jonas