diff --git a/README.md b/README.md
index 0a30dd4..fd429c6 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ A game server emulator for a certain anime game.
 # Running the server and client
 
 ### Prerequisites
-* [Java 25](https://www.oracle.com/java/technologies/javase/jdk25-archive-downloads.html)
+* [Java 21](https://www.oracle.com/java/technologies/javase/jdk21-archive-downloads.html)
 
 ### Recommended
 * [MongoDB 4.0+](https://www.mongodb.com/try/download/community)