diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/util/Commodore.java b/paper-server/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
index ac48431777..6ccfd49c43 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
@@ -128,7 +128,7 @@ public class Commodore
         ClassReader cr = new ClassReader( b );
         ClassWriter cw = new ClassWriter( cr, 0 );
 
-        cr.accept( new ClassVisitor( Opcodes.ASM8, cw )
+        cr.accept( new ClassVisitor( Opcodes.ASM9, cw )
         {
             @Override
             public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)