In the v5.0.1 release, the version string is still set to v5.0.0 (and, to my knowledge, this is not being overridden at build time). As a result, it still shows its version as v5.0.0 at runtime, which is not accurate.
https://github.com/owasp-amass/amass/blob/v5.0.1/internal/afmt/print.go#L34