diff --git a/README.md b/README.md
index 399bf5f8c..88b46e870 100644
--- a/README.md
+++ b/README.md
@@ -5,14 +5,25 @@
 ### :warning: WARNING :warning::  You **CANNOT** publish any code generated by this tool.
 
 ### Supported versions:
-1.13->1.21.10
+1.13->1.21.11
 
-### Important
-1.17< Needs JDK 16
+## Important: Java Requirements
 
-1.18> Needs JDK 17
+| Minecraft Version | Required JDK |
+|------------------|--------------|
+| 1.13 - 1.16.5     | JDK 8        |
+| 1.17              | JDK 16       |
+| 1.18              | JDK 17       |
+| 1.18+             | JDK 21       |
 
-1.21> Needs JDK 21
+Quick check:
+```
+java -version
+```
+
+⚠ Ensure that JAVA_HOME points to the correct JDK.
+
+---
 
 ### How to use
 
diff --git a/build.gradle b/build.gradle
index ed6963d85..da515b386 100644
--- a/build.gradle
+++ b/build.gradle
@@ -34,10 +34,10 @@ group = 'me.yourname'
 version = '1.0.0'
 
 ext {
-    minecraft_version = '1.21.10'
-    mcp_version = '20251007.101210'
+    minecraft_version = '1.21.11'
+    mcp_version = '20251209.095502'
     mappings_channel = 'official'
-    mappings_version = '1.21.10'
+    mappings_version = '1.21.11'
     spi_version = '7.0.0'
 }