2021-12-23 PST. Hook 3.4.1 is available for download here.
This merely fixes an issue with Hook 3.4 that prevented users of macOS 10.14 and macOS 10.15 from from being able to add Hook to Finder and Safari’s share menus.
macOS 11 and macOS 12 users of Hook can stick with Hook 3.4 (or apply this update).
See Hook 3.4 release notes for more information on Hook 3.4, which we released a couple of days ago.