Download Paper 1.21.9-pre2 Server
The Paper server JAR for Minecraft 1.21.9-pre2, direct from the official source. Build details, release date and Java requirements below.
Java required
Java 21
Released
Sep 21, 2025
Build
7
File size
49 MB
Channel
Experimental
SHA-1 checksum
f24f81421449bbcf125be5501223bf9faa9a3ef2006b16988be25601c015757e
Setup
Start script (Linux/macOS)
java -Xms4G -Xmx4G --add-modules=jdk.incubator.vector -XX:+UseG1GC -jar paper.jar noguiStart script (Windows)
java -Xms4G -Xmx4G --add-modules=jdk.incubator.vector -XX:+UseG1GC -jar paper.jar --nogui
pauseOther Minecraft 1.21 builds of Paper
Other builds in the 1.21.x line. The newest stable is selected by default above.