It seems that maven central is not up to date with the latest basex version. I see here that there's only version 7.3.1 whereas on the basex website the latest version is 8.4.4
http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.basex%22 Are there any plans to keep maven central up to date with basex releases?