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Leaf for Minecraft 1.21.1

4 builds of Leaf published for Minecraft 1.21.1, newest first. Every download links to the project’s own release.

Latest build
#4
Java required
Java 21 or newer
Builds
4
Newest published
27 Apr 2025

Leaf builds for 1.21.1

Newest first. The checksum is the project's own, where it publishes one.

All versions
BuildChannelPublishedSizeDownload
#4beta27 Apr 202586.1 MBserver.jar
#3beta25 Apr 202586.1 MBserver.jar
#2beta24 Mar 202586.1 MBserver.jar
#1beta27 Apr 202586.1 MBserver.jar

Leaf on 1.21.1: common questions

Does Leaf support Minecraft 1.21.1?

Yes. 4 builds have been published for 1.21.1, the newest being build 4. This is not a declared claim: each build below is a real file the project released for this version.

Which Java version do I need for Leaf 1.21.1?

Java 21 or newer. The requirement comes from Minecraft 1.21.1 itself rather than from Leaf, so it applies to any server software running this version. A newer Java than that is fine.

Which Leaf build should I run on 1.21.1?

The newest one, build 4, published 15 mo ago. Later builds for the same Minecraft version are bug fixes and performance work, so there is rarely a reason to run an older one deliberately.

Is this download official?

Yes. Every link points at Leaf's own release or API. MCReference does not mirror, re-host or repackage a jar; where the project publishes a SHA-256 we show it so you can verify the file you got.