Download Paper 1.21.11-rc1 Server
The Paper server JAR for Minecraft 1.21.11-rc1, direct from the official source. Build details, release date and Java requirements below.
Java required
Java 21
Released
Dec 4, 2025
Build
19
File size
51 MB
Channel
Experimental
SHA-1 checksum
bfd57d33c550fa70a493fc00f30eac275dc4a71fa7f8eaa990ca240ef7024f02
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.