diff --git a/gradle.properties b/gradle.properties
index 6677b18..a38f704 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@ org.gradle.vfs.watch=true
 
 minecraft=1.21.6
 forge_version=21.6.0-beta
-kotlinforforge=5.8.0
+kotlinforforge=5.9.0
 kotlinVer=2.1.20
 kotlin_coroutines_version=1.10.2
 serializationVer=1.8.1