ansible-lint --version should not connect to github.com

[raphideb]

I am running ansible-lint behind a corporate firewall and even when I just want to know the version, I need to wait until it times-out while trying to connect to github.com. The "--offline" switch does not have an effect on that:
strace ansible-lint --version --offline
...
connect(3, {sa_family=AF_INET, sin_port=htons(443), sin_addr=inet_addr("140.82.121.6")}, 16
...
The IP resolves to: lb-140-82-121-6-fra.github.com

Is there a way to prevent this? I think --version should never try to connect to github, it should just give the version and nothing more.