diff --git a/slimeworldmanager-classmodifier/pom.xml b/slimeworldmanager-classmodifier/pom.xml
index 189fabe..4c7e694 100644
--- a/slimeworldmanager-classmodifier/pom.xml
+++ b/slimeworldmanager-classmodifier/pom.xml
@@ -9,15 +9,29 @@
 
     <artifactId>slimeworldmanager-classmodifier</artifactId>
 
+    <repositories>
+        <repository>
+            <id>minecraft-libraries</id>
+            <name>Minecraft Libraries</name>
+            <url>https://libraries.minecraft.net</url>
+        </repository>
+    </repositories>
+
     <dependencies>
         <dependency>
             <groupId>org.javassist</groupId>
             <artifactId>javassist</artifactId>
             <version>3.25.0-GA</version>
         </dependency>
+        <dependency>
+            <groupId>com.mojang</groupId>
+            <artifactId>datafixerupper</artifactId>
+            <version>1.0.20</version>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.spigotmc</groupId>
-            <artifactId>spigot</artifactId>
+            <artifactId>spigot-api</artifactId>
             <version>1.14.4-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
diff --git a/slimeworldmanager-classmodifier/src/main/java/com/grinderwolf/swm/clsm/NMSTransformer.java b/slimeworldmanager-classmodifier/src/main/java/com/grinderwolf/swm/clsm/NMSTransformer.java
index 8248bc0..e6951be 100644
--- a/slimeworldmanager-classmodifier/src/main/java/com/grinderwolf/swm/clsm/NMSTransformer.java
+++ b/slimeworldmanager-classmodifier/src/main/java/com/grinderwolf/swm/clsm/NMSTransformer.java
@@ -1,6 +1,6 @@
 package com.grinderwolf.swm.clsm;
 
-import javassist.ByteArrayClassPath;
+import javassist.LoaderClassPath;
 import javassist.CannotCompileException;
 import javassist.ClassPool;
 import javassist.CtClass;
@@ -145,7 +145,7 @@ public byte[] transform(ClassLoader classLoader, String className, Class<?> clas
 
                 try {
                     ClassPool pool = ClassPool.getDefault();
-                    pool.appendClassPath(new ByteArrayClassPath(fixedClassName, bytes));
+                    pool.appendClassPath(new LoaderClassPath(classLoader));
                     CtClass ctClass = pool.get(fixedClassName);
 
                     for (Change change : changes.get(className)) {