Composer problem

[m0lmk]

I'm trying to install Userfrosting using composer but am running into a problem. I get the following message when running "composer install":

[RuntimeException]
Can not clone https://github.com/userfrosting/installers.git to access package information. The "/home/vagrant/.composer/cache/vcs" directory is not writable by the current user.

Current user is "vagrant"

/home/vagrant/.composer/cache/vcs/ is owned by root.

Is it ok to just change the ownership of /home/vagrant/.composer/cache/vcs/ to "vagrant"?

Thanks.