diff --git a/Editor/Settings/ObfuzSettings.cs b/Editor/Settings/ObfuzSettings.cs
index fa4d3bf..91be399 100644
--- a/Editor/Settings/ObfuzSettings.cs
+++ b/Editor/Settings/ObfuzSettings.cs
@@ -76,9 +76,6 @@ namespace Obfuz.Settings
         [Tooltip("watermark settings")]
         public WatermarkSettings watermarkSettings;
 
-        [Tooltip("polymorphic dll settings")]
-        public PolymorphicDllSettings polymorphicDllSettings;
-
         public string ObfuzRootDir => $"Library/Obfuz";
 
         public string GetObfuscatedAssemblyOutputPath(BuildTarget target)
diff --git a/Editor/Settings/PolymorphicDllSettings.cs b/Editor/Settings/PolymorphicDllSettings.cs
deleted file mode 100644
index fbc887c..0000000
--- a/Editor/Settings/PolymorphicDllSettings.cs
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2025 Code Philosophy
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-// SOFTWARE.
-
-using System;
-using UnityEngine;
-
-namespace Obfuz.Settings
-{
-    [Serializable]
-    public class PolymorphicDllSettings
-    {
-        [Tooltip("enable polymorphic DLL generation")]
-        public bool enable = true;
-
-        [Tooltip("secret key for generating polymorphic DLL source code")]
-        public string codeGenerationSecretKey = "obfuz-polymorphic-key";
-
-        [Tooltip("disable load standard dotnet dll")]
-        public bool disableLoadStandardDll = false;
-    }
-}
diff --git a/Editor/Settings/PolymorphicDllSettings.cs.meta b/Editor/Settings/PolymorphicDllSettings.cs.meta
deleted file mode 100644
index f188589..0000000
--- a/Editor/Settings/PolymorphicDllSettings.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: ecab9aab707d08949b2d602a4d61084a
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Plugins/dnlib.dll b/Plugins/dnlib.dll
index 2cdcddb..ba1f36d 100644
Binary files a/Plugins/dnlib.dll and b/Plugins/dnlib.dll differ