Download Forge 1.21.9 Server

The Forge server JAR for Minecraft 1.21.9, direct from the official source. Build details, release date and Java requirements below.

Java required

Java 21

Released

Sep 30, 2025

Build

59.0.5

Channel

Stable

Latest stable build

1.21.9

Build 59.0.5

Download installer

Setup

Installation

1. Download the installer JAR above
2. Run: java -jar forge-installer.jar --installServer
3. Accept the EULA (eula.txt)
4. Run ./run.sh (Linux/macOS) or run.bat (Windows)

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Other Minecraft 1.21 builds of Forge

Other builds in the 1.21.x line. The newest stable is selected by default above.

1.21.11 1.21.10 1.21.8 1.21.7 1.21.6 1.21.5 1.21.4 1.21.3 1.21.1 1.21

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