workshoper github refused connection

Hello everyone.
I am trying to install thinking-in-react but, the npm installation returns that github.com workshopper package was refused.

I've changed the workshopper in the package.json to the version 2.7.0 and it works.

my npm version is 3.5.2.

Thanks!

Start with package.json and reproduce the npm installation using npm 3.5.2, noting the GitHub connection error and comparing it with version 2.7.0. The issue is done when the workshopper installs successfully without manually changing the dependency version.

Written by the indexing model from the issue text.