Pircbotx is GPLv3: https://github.com/pircbotx/pircbotx This Repository is licensed under MIT, which is not allowed: https://opensource.stackexchange.com/a/1641 . Current options: - Change Repository license to GPLv3 - Remove Pircbotx dependency; a possible option is https://github.com/KittehOrg/KittehIRCClientLib (I'll be doing this in the Quarkus refactor)