Maven doesn't specify hard version numbers - the default meaning of "1.0" is >= 1.0, and some packages specify dependencies without a version at all. It's quite

Maven doesn't specify hard version numbers - the default meaning of "1.0" is >= 1.0, and some packages specify dependencies without a version at all. It's quite possible to get updates of transitive dependencies without realising it (especially since most tooling does not encourage pinning any dependency other than the superficial ones).