Pluto for Minecraft 1.21.5
7 builds of Pluto published for Minecraft 1.21.5, newest first. Every download links to the project’s own release.
- Latest build
- #52
- Java required
- Java 21 or newer
- Builds
- 7
- Newest published
- 13 Apr 2026
Pluto builds for 1.21.5
Newest first. The checksum is the project's own, where it publishes one.
| Build | Channel | Published | Size | Download |
|---|---|---|---|---|
| #52 | beta | 13 Apr 2026 | 49.4 MB | server.jar |
| #51 | beta | 9 Apr 2026 | 49.4 MB | server.jar |
| #50 | beta | 8 Feb 2026 | 49.4 MB | server.jar |
| #49 | beta | 8 Oct 2025 | 49.4 MB | server.jar |
| #47 | beta | 4 Aug 2025 | 49.4 MB | server.jar |
| #46 | beta | 29 Jun 2025 | 49.4 MB | server.jar |
| #45 | beta | 16 Jun 2025 | 49.4 MB | server.jar |
Pluto on 1.21.5: common questions
Does Pluto support Minecraft 1.21.5?
Yes. 7 builds have been published for 1.21.5, the newest being build 52. 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 Pluto 1.21.5?
Java 21 or newer. The requirement comes from Minecraft 1.21.5 itself rather than from Pluto, so it applies to any server software running this version. A newer Java than that is fine.
Which Pluto build should I run on 1.21.5?
The newest one, build 52, published 3 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 Pluto'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.