This bill of materials (BOM) POM covers all the SLF4J artifacts related to a particular version. By importing this BOM, you fix the version of all of SLF4J-related artifacts to the versions associated with a particular release. This prevents the overriding of SLF4J transitive dependencies which in turn could cause version conflicts between libraries. To use this BOM, add the following in your POM: <dependencyManagement> ...