Download Paper 1.21.11-rc3 Server
The Paper server JAR for Minecraft 1.21.11-rc3, direct from the official source. Build details, release date and Java requirements below.
Java required
Java 21
Released
Dec 8, 2025
Build
31
File size
51 MB
Channel
Experimental
SHA-1 checksum
213ceae4eb2268fc110a8605c00597ab56fe733ec41a59d06689de178bbec3f9
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.