diff --git a/src/AcDream.App/Rendering/Wb/DatCollectionAdapter.cs b/src/AcDream.App/Rendering/Wb/DatCollectionAdapter.cs
index 874fd33..3b661e2 100644
--- a/src/AcDream.App/Rendering/Wb/DatCollectionAdapter.cs
+++ b/src/AcDream.App/Rendering/Wb/DatCollectionAdapter.cs
@@ -118,6 +118,7 @@ internal sealed class DatDatabaseWrapper : IDatDatabase
 {
     private readonly DatDatabase _db;
     private readonly ConcurrentDictionary<(Type, uint), IDBObj> _cache = new();
+    private readonly object _lock = new();
 
     public DatDatabaseWrapper(DatDatabase db)
     {
@@ -142,20 +143,33 @@ internal sealed class DatDatabaseWrapper : IDatDatabase
             return true;
         }
 
-        if (_db.TryGet<T>(fileId, out value))
+        lock (_lock)
         {
-            _cache.TryAdd((typeof(T), fileId), value);
-            return true;
+            if (_db.TryGet<T>(fileId, out value))
+            {
+                _cache.TryAdd((typeof(T), fileId), value);
+                return true;
+            }
         }
 
         return false;
     }
 
-    public bool TryGetFileBytes(uint fileId, [MaybeNullWhen(false)] out byte[] value) =>
-        _db.TryGetFileBytes(fileId, out value);
+    public bool TryGetFileBytes(uint fileId, [MaybeNullWhen(false)] out byte[] value)
+    {
+        lock (_lock)
+        {
+            return _db.TryGetFileBytes(fileId, out value);
+        }
+    }
 
-    public bool TryGetFileBytes(uint fileId, ref byte[] bytes, out int bytesRead) =>
-        _db.TryGetFileBytes(fileId, ref bytes, out bytesRead);
+    public bool TryGetFileBytes(uint fileId, ref byte[] bytes, out int bytesRead)
+    {
+        lock (_lock)
+        {
+            return _db.TryGetFileBytes(fileId, ref bytes, out bytesRead);
+        }
+    }
 
     public bool TrySave<T>(T obj, int iteration = 0) where T : IDBObj =>
         throw new NotSupportedException("DatDatabaseWrapper is read-only.");
diff --git a/src/AcDream.App/Rendering/Wb/WbMeshAdapter.cs b/src/AcDream.App/Rendering/Wb/WbMeshAdapter.cs
index b5c6a80..ed8b8ef 100644
--- a/src/AcDream.App/Rendering/Wb/WbMeshAdapter.cs
+++ b/src/AcDream.App/Rendering/Wb/WbMeshAdapter.cs
@@ -10,7 +10,6 @@ using DatReaderWriter.DBObjs;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Silk.NET.OpenGL;
-using WorldBuilder.Shared.Models;
 using WorldBuilder.Shared.Services;
 
 namespace AcDream.App.Rendering.Wb;