Minimum publish age is a package-management policy that prevents versions from being selected automatically until a configured period has passed since publication. In Cargo, for example, the age of a package version can act as a filter during dependency resolution. It delays adoption; it does not inspect code or determine whether a release is safe.
This waiting period can give maintainers time to notice suspicious release activity, review advisories, or assess a new version before automated builds consume it. It is most relevant to workflows that regularly refresh dependencies, while a locked dependency may not be affected until versions are updated. Attackers can still wait out the delay, so minimum publish age is a risk-reduction measure, not a guarantee. Combine it with provenance checks, dependency monitoring, lockfile review, and careful CI practices.