Not only does Keybase not automatically update its client, there is no way to even figure out if your client is out of date and in need of security updates. Even if you look up the exact version of your installed client, which you can find, there is nothing on the website that says what the most recent version is. The only way to even get a hint is to look on GitHub, and even that isn't accurate; version 4.2.1 is the latest release, but when I download the mac app it's still version 4.2.0.
For whatever problems Slack has, at least I know if there is a new version that I need to install.
For whatever problems Slack has, at least I know if there is a new version that I need to install.