Can't add github repositories from the wizard

Hello everybody.
I’m using kicad 4.0.2 on ubuntu. Everything seems to work fine, my libraries are a little outdated though. So when i tried to understand why, i found out that i can’t add github repositories.
The button are simply disabled and i can only select local files

I searched if someone had the same problem but i can’t find anything, can anybody help me?

Thank you :slight_smile: