GitHub is updating its infrastructure by changing some of its IP addresses, but most users won't need to take action. These changes, initially announced in April, have already been applied to several GitHub services, and the company is now transitioning the main site to the new IPs. Users with specific firewall rules should update them to include the new IP ranges, and those with static IP entries in their /etc/hosts file should switch to using DNS for accurate addresses. SSH users might receive a warning when connecting to a new IP, which can be ignored if the IP is within the specified range of 192.30.252.0 to 192.30.255.255. These updates aim to enhance GitHub's speed and reliability.