FactionsUUID will soon be making the following big changes, first announced many months ago:

• Supporting modern MC (currently aiming 1.20.4+, but might shift even further forward depending on when the next release is published) with specific legacy support for 1.8.8 only (aimed at the folks running maintained 1.8.8 forks)
• Moving to Java 17 for 1.8.8 and Java 21 for 1.20.4+. Start testing your plugins now! Let me know if you need help fixing one!

Anyway, here's the changelog:

• Supports Minecraft 1.20.6!
  • Clickable and hover text now work on this new version.
  • Fixed issue where default REDSTONE particle needed renaming to DUST.
• Adds three missing translations:
  • COMMAND->UNCLAIM->NOTAMEMBER
  • FACTION->HOME->UNSET
  • FACTION->NEWLEADER
• Improved claim saving code to handle more calculations off the main thread.
  • Significant improvement for world-map servers.
• Introduced warnings about future version support changes, if detecting a future non-supported version of MC or Java.