Plugin not loading on 1.20.5/1.20.6

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Because of this change https://forums.papermc.io/threads/important-dev-psa-future-removal-of-cb-package-relocation.1106/

[11:45:24 ERROR]: Error occurred while enabling XPBoost v3.5.0 (Is it up to date?)
java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3
	at xpboost-3.5.0.jar/cz.dubcat.xpboost.XPBoostMain.onEnable(XPBoostMain.java:222) ~[xpboost-3.5.0.jar:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:288) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
	at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:626) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:575) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:675) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:437) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:323) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1136) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:323) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
	at java.base/java.lang.Thread.run(Unknown Source) ~[?:?]

Should be easy to fix since plugin works fine on those versions. I just replaced version string in XPBoostMain.java on line 222 which was a bad practice anyway, but idk about 1.8.X compatibility tho:

String version = getServer().getBukkitVersion().split("-")[0];