The artifact coordinates have changed from de.florianmichael:CheckHost4J to de.florianreuth:checkhost4j.

If you were previously using the repository at https://maven.florianmichael.de/, please update it to https://maven.florianreuth.de/.

Your support means a lot! If you'd like to help keep the project going, consider donating at https://florianreuth.de/donate. I’ll continue improving this project to the best of my ability.