# 1.21.5 Update
Check bottom of this change log for instructions on how to get the new items in our 1.21.4 and earlier Skybock worlds.
## Island Changes
- Birch starter and outer islands now have the new **Bush** on them
- Mangrove starter and outer islands now have the **Firefly Bush** on them
- Desert starter island, dester outer island, and badlands starter islands now have **Dry Grass** on them.
## Bug Fixes
- Chosing Classic island now clears all of the previous islands
- Outer Islands/Nether Islands no longer stop generating before they are supposed to
- Starter island not defaults to Planes when biome is not recognized
- Frozen Slops and Snowy Slopes Now generate the Snowy Slope starting island
- Fixed incompatibility with 1.20.X version of minecraft
## Update Instuctions
After replacing your older Skyblock Infinite datapack with this datapack (version 1.1.6), use the command
```
/function skyblock:update/1_21_5_update
```
This will give you the new plants **ONLY IF** the islands they are on have already been generated in your world.
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" }