Downloads for Zeek 4.0.5 are available:
https://zeek.org/get-zeek
https://download.zeek.org/zeek-4.0.5.tar.gz
See the release notes for details of the addressed bugs and security issues:
https://github.com/zeek/zeek/releases/tag/v4.0.5
Binary packages for the new releases will also be available shortly: