diff --git a/Scripts/BlendShape/Editor/VRMBlendShapeManipulatorEditor.cs b/Scripts/BlendShape/Editor/VRMBlendShapeManipulatorEditor.cs
index ae5e41aaa..a7f416eb8 100644
--- a/Scripts/BlendShape/Editor/VRMBlendShapeManipulatorEditor.cs
+++ b/Scripts/BlendShape/Editor/VRMBlendShapeManipulatorEditor.cs
@@ -120,7 +120,11 @@ namespace VRM
             var assetPath = string.Format("Assets/{0}.{1}.asset",
                 m_target.name,
                 maxWeightName);
+#if UNITY_2018_2_OR_NEWER
+            var prefab = PrefabUtility.GetCorrespondingObjectFromSource(m_target.gameObject);
+#else
             var prefab = PrefabUtility.GetPrefabParent(m_target.gameObject);
+#endif
             if (prefab != null)
             {
                 var prefabPath = AssetDatabase.GetAssetPath(prefab);
diff --git a/Scripts/SkinnedMeshUtility/Editor/BoneMeshEraserWizard.cs b/Scripts/SkinnedMeshUtility/Editor/BoneMeshEraserWizard.cs
index 7933d8970..6973fdf03 100644
--- a/Scripts/SkinnedMeshUtility/Editor/BoneMeshEraserWizard.cs
+++ b/Scripts/SkinnedMeshUtility/Editor/BoneMeshEraserWizard.cs
@@ -168,7 +168,11 @@ namespace VRM
 
             // save mesh to Assets
             var assetPath = string.Format("{0}{1}", go.name, ASSET_SUFFIX);
+#if UNITY_2018_2_OR_NEWER
+            var prefab = PrefabUtility.GetCorrespondingObjectFromSource(go);
+#else
             var prefab = PrefabUtility.GetPrefabParent(go);
+#endif
             if (prefab != null)
             {
                 var prefabPath = AssetDatabase.GetAssetPath(prefab);
diff --git a/Scripts/SkinnedMeshUtility/Editor/MeshIntegrator.cs b/Scripts/SkinnedMeshUtility/Editor/MeshIntegrator.cs
index 7b2575416..55c860b0a 100644
--- a/Scripts/SkinnedMeshUtility/Editor/MeshIntegrator.cs
+++ b/Scripts/SkinnedMeshUtility/Editor/MeshIntegrator.cs
@@ -44,7 +44,11 @@ namespace VRM
 
             // save mesh to Assets
             var assetPath = string.Format("{0}{1}", go.name, ASSET_SUFFIX);
+#if UNITY_2018_2_OR_NEWER
+            var prefab = PrefabUtility.GetCorrespondingObjectFromSource(go);
+#else
             var prefab = PrefabUtility.GetPrefabParent(go);
+#endif
             if (prefab != null)
             {
                 var prefabPath = AssetDatabase.GetAssetPath(prefab);
diff --git a/UniGLTF b/UniGLTF
index 1ad983a65..fae0f5e1f 160000
--- a/UniGLTF
+++ b/UniGLTF
@@ -1 +1 @@
-Subproject commit 1ad983a65b74cee1b0351f21b77e39344dcf76d9
+Subproject commit fae0f5e1f44f8c0fe06c9fd2c61ac99e513c7141
diff --git a/pull.bat.meta b/pull.bat.meta
deleted file mode 100644
index 02c4fae13..000000000
--- a/pull.bat.meta
+++ /dev/null
@@ -1,9 +0,0 @@
-fileFormatVersion: 2
-guid: c27f018409a99674892d7bab2dc4ed66
-timeCreated: 1522043090
-licenseType: Free
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: