# KinglyBosses 5.0.0-DEV-9
### Added
- Added a shared attribute utility to handle Minecraft attribute keys consistently across boss spawning flows.
### Changed
- Updated plugin API target from Minecraft/Paper `1.19` to `1.21`.
- Plugin version is now pulled from Maven during build.
- Refactored boss attribute handling in spawn, respawn, command spawn, ID-based spawn, and invoked attack mobs.
### Fixed
- Improved compatibility with newer Paper/Minecraft 1.21 attribute names.
- Added fallback support for legacy `generic.*` attribute keys.
- Reduced duplicated attribute registry logic across different boss spawn paths.
### Technical
- Verified Java 21 compilation.
- Built test jar: `kinglybosses-5.0.0-DEV-9.jar`.
Developer information
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