diff --git a/.gitignore b/.gitignore
index 51924be..ac75be4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@ Desktop.ini
 /Library
 /Logs
 /Temp
+/UserSettings
diff --git a/Packages/jp.keijiro.metamesh/Editor/MetameshImporter.cs b/Packages/jp.keijiro.metamesh/Editor/MetameshImporter.cs
index 9a33e7e..27fd73f 100644
--- a/Packages/jp.keijiro.metamesh/Editor/MetameshImporter.cs
+++ b/Packages/jp.keijiro.metamesh/Editor/MetameshImporter.cs
@@ -1,6 +1,10 @@
 using UnityEngine;
 using UnityEditor;
+#if UNITY_2020_2_OR_NEWER
+using UnityEditor.AssetImporters;
+#else
 using UnityEditor.Experimental.AssetImporters;
+#endif
 
 namespace Metamesh
 {
diff --git a/Packages/jp.keijiro.metamesh/Editor/MetameshImporterEditor.cs b/Packages/jp.keijiro.metamesh/Editor/MetameshImporterEditor.cs
index 7db7821..1cdc03e 100644
--- a/Packages/jp.keijiro.metamesh/Editor/MetameshImporterEditor.cs
+++ b/Packages/jp.keijiro.metamesh/Editor/MetameshImporterEditor.cs
@@ -1,6 +1,10 @@
 using UnityEngine;
 using UnityEditor;
+#if UNITY_2020_2_OR_NEWER
+using UnityEditor.AssetImporters;
+#else
 using UnityEditor.Experimental.AssetImporters;
+#endif
 
 namespace Metamesh
 {