diff --git a/src/UniTask/Assets/Plugins/UniTask/Editor/UniTaskTrackerTreeView.cs b/src/UniTask/Assets/Plugins/UniTask/Editor/UniTaskTrackerTreeView.cs
index e7b62692..7c124423 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Editor/UniTaskTrackerTreeView.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Editor/UniTaskTrackerTreeView.cs
@@ -10,6 +10,11 @@
 using Cysharp.Threading.Tasks.Internal;
 using System.Text;
 using System.Text.RegularExpressions;
+#if UNITY_6000_2_OR_NEWER
+using TreeView = UnityEditor.IMGUI.Controls.TreeView<int>;
+using TreeViewItem = UnityEditor.IMGUI.Controls.TreeViewItem<int>;
+using TreeViewState = UnityEditor.IMGUI.Controls.TreeViewState<int>;
+#endif
 
 namespace Cysharp.Threading.Tasks.Editor
 {
@@ -179,4 +184,3 @@ protected override void RowGUI(RowGUIArgs args)
     }
 
 }
-