diff --git a/Assets/Packages/com.studio23.ss2.dialoguesystem/Runtime/Data/xNode/Node/DialogueChoiceNode.cs b/Assets/Packages/com.studio23.ss2.dialoguesystem/Runtime/Data/xNode/Node/DialogueChoiceNode.cs
index 1e37e48..3c484a0 100644
--- a/Assets/Packages/com.studio23.ss2.dialoguesystem/Runtime/Data/xNode/Node/DialogueChoiceNode.cs
+++ b/Assets/Packages/com.studio23.ss2.dialoguesystem/Runtime/Data/xNode/Node/DialogueChoiceNode.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Studio23.SS2.DialogueSystem.Runtime.Data;
+using Cysharp.Threading.Tasks;
 using UnityEngine;
 namespace Studio23.SS2.DialogueSystem.Data
 {
diff --git a/Assets/Packages/com.studio23.ss2.dialoguesystem/package.json b/Assets/Packages/com.studio23.ss2.dialoguesystem/package.json
index 6be478e..4280793 100644
--- a/Assets/Packages/com.studio23.ss2.dialoguesystem/package.json
+++ b/Assets/Packages/com.studio23.ss2.dialoguesystem/package.json
@@ -1,6 +1,6 @@
 {
     "name": "com.studio23.ss2.dialoguesystem",
-    "version": "0.4.11",
+    "version": "0.4.12",
     "displayName": "Dialogue System",
     "description": "Dialogue system is an authoring tool for developers to integrate dialogue from scriptwriters inside unity.",
     "unity": "2022.3",