diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b7c124..ccf38c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# [3.0.0-preview.26](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v3.0.0-preview.25...v3.0.0-preview.26) (2020-09-01)
+
+
+### Bug Fixes
+
+* in Unity 2018.2, PrefabStageUtility is not found ([0b6dcff](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0b6dcff5d6356db497532daa0a26804852e8de24))
+
 # [3.0.0-preview.25](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v3.0.0-preview.24...v3.0.0-preview.25) (2020-09-01)
 
 
diff --git a/Scripts/Editor/UIParticleEditor.cs b/Scripts/Editor/UIParticleEditor.cs
index 45a010c..921c351 100644
--- a/Scripts/Editor/UIParticleEditor.cs
+++ b/Scripts/Editor/UIParticleEditor.cs
@@ -2,7 +2,6 @@ using UnityEditor;
 using UnityEditor.UI;
 using UnityEngine;
 using System.Collections.Generic;
-using UnityEditor.Experimental.SceneManagement;
 using UnityEditorInternal;
 using UnityEngine.UI;
 
@@ -152,11 +151,13 @@ namespace Coffee.UIExtensions
             DestroyImmediate(p);
             DestroyImmediate(cr);
 
-            var stage = PrefabStageUtility.GetCurrentPrefabStage();
+#if UNITY_2018_3_OR_NEWER
+            var stage = UnityEditor.Experimental.SceneManagement.PrefabStageUtility.GetCurrentPrefabStage();
             if (stage != null && stage.scene.isLoaded)
             {
                 PrefabUtility.SaveAsPrefabAsset(stage.prefabContentsRoot, stage.prefabAssetPath);
             }
+#endif
         }
 
         bool FixButton(bool show, string text)
diff --git a/package.json b/package.json
index 755dd01..483a1ac 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "com.coffee.ui-particle",
   "displayName": "UI Particle",
   "description": "This plugin provide a component to render particle effect for uGUI.\nThe particle rendering is maskable and sortable, without Camera, RenderTexture or Canvas.",
-  "version": "3.0.0-preview.25",
+  "version": "3.0.0-preview.26",
   "unity": "2018.2",
   "license": "MIT",
   "repository": {