diff --git a/generated_world/src/main/java/mc/world/generated_world/chunk/ChunkProxy.java b/generated_world/src/main/java/mc/world/generated_world/chunk/ChunkProxy.java
index d135759..292f886 100644
--- a/generated_world/src/main/java/mc/world/generated_world/chunk/ChunkProxy.java
+++ b/generated_world/src/main/java/mc/world/generated_world/chunk/ChunkProxy.java
@@ -4,9 +4,13 @@ import mc.core.block.Block;
 import mc.core.world.Biome;
 import mc.core.world.Chunk;
 
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
 public class ChunkProxy implements Chunk {
     private final Chunk chunk;
-    private volatile long lastUsage = System.currentTimeMillis();
+    private volatile transient long lastUsage = System.currentTimeMillis();
+    private final transient ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
 
     public ChunkProxy(Chunk chunk) {
         this.chunk = chunk;
@@ -18,7 +22,7 @@ public class ChunkProxy implements Chunk {
         }
     }
 
-    private void use () {
+    private final void use () {
         synchronized (chunk) {
             lastUsage = System.currentTimeMillis();
         }