# Changes in Version 2.9.1
### Notes:
- This release is marked **experimental**. It is safe to use on your server, but unexpected bugs or version‑specific quirks may occur.
- If you encounter any issues (holograms not showing, errors, etc.), please report them on our Discord server, so we can fix quickly them.
### New features / Improvements:
- Added configurable `new_version_available` message.
- Updated `item-nbt-api` to 2.15.0
- Fixed support for 1.21.5.
- Removed some unused/unnecessary code.
Have you found any bugs or mistakes? Please, report them on our [Discord](https://discord.decentsoftware.eu/) server.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }