maven dependency without version

Ok, I think I’m gonna answer it myself. Of course I took a look at dependency:tree, but all the dependencies that I mentioned were first-level members of the tree. What I failed to notice right away, is that dependencyManagement is not present in the parent, but it is however present in the submodules, and what is more interesting it contains:

        <dependency>
            <groupId>io.spring.platform</groupId>
            <artifactId>platform-bom</artifactId>
            <version>1.0.2.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

I’ve never used Spring IO Platform before, so this is a totally new concept for me. As it turns out the platform includes quite a few preconfigured dependencies:
http://docs.spring.io/platform/docs/current/reference/htmlsingle/#appendix-dependency-versions