diff --git a/Editor/Settings/AssemblySettings.cs b/Editor/Settings/AssemblySettings.cs
index fb0c6b6..9792351 100644
--- a/Editor/Settings/AssemblySettings.cs
+++ b/Editor/Settings/AssemblySettings.cs
@@ -5,7 +5,6 @@ using UnityEngine;
 
 namespace Obfuz.Settings
 {
-
     [Serializable]
     public class AssemblySettings
     {
diff --git a/Editor/Settings/ObfuzSettings.cs b/Editor/Settings/ObfuzSettings.cs
index 7ee3af8..19fbe3c 100644
--- a/Editor/Settings/ObfuzSettings.cs
+++ b/Editor/Settings/ObfuzSettings.cs
@@ -47,6 +47,9 @@ namespace Obfuz.Settings
         [Tooltip("garbage code generator settings")]
         public GarbageCodeGenerationSettings garbageCodeGenerationSettings;
 
+        [Tooltip("polymorphic dll settings")]
+        public PolymorphicDllSettings polymorphicDllSettings;
+
         public string ObfuzRootDir => $"Library/Obfuz";
 
         public string GetObfuscatedAssemblyOutputPath(BuildTarget target)
diff --git a/Editor/Settings/ObfuzSettingsProvider.cs b/Editor/Settings/ObfuzSettingsProvider.cs
index c101aba..2b0afce 100644
--- a/Editor/Settings/ObfuzSettingsProvider.cs
+++ b/Editor/Settings/ObfuzSettingsProvider.cs
@@ -41,6 +41,8 @@ namespace Obfuz.Settings
 
         private SerializedProperty _garbageCodeGenerationSettings;
 
+        private SerializedProperty _polymorphicDllSettings;
+
         public ObfuzSettingsProvider() : base("Project/Obfuz", SettingsScope.Project)
         {
         }
@@ -78,6 +80,8 @@ namespace Obfuz.Settings
             _controlFlowObfusSettings = _serializedObject.FindProperty("controlFlowObfusSettings");
 
             _garbageCodeGenerationSettings = _serializedObject.FindProperty("garbageCodeGenerationSettings");
+
+            _polymorphicDllSettings = _serializedObject.FindProperty("polymorphicDllSettings");
         }
 
         public override void OnGUI(string searchContext)
@@ -107,6 +111,8 @@ namespace Obfuz.Settings
 
             EditorGUILayout.PropertyField(_garbageCodeGenerationSettings);
 
+            EditorGUILayout.PropertyField(_polymorphicDllSettings);
+
             if (EditorGUI.EndChangeCheck())
             {
                 _serializedObject.ApplyModifiedProperties();
diff --git a/Editor/Settings/PolymorphicDllSettings.cs b/Editor/Settings/PolymorphicDllSettings.cs
new file mode 100644
index 0000000..e2d1180
--- /dev/null
+++ b/Editor/Settings/PolymorphicDllSettings.cs
@@ -0,0 +1,18 @@
+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
new file mode 100644
index 0000000..f188589
--- /dev/null
+++ b/Editor/Settings/PolymorphicDllSettings.cs.meta
@@ -0,0 +1,11 @@
+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 ba1f36d..d6c2fd9 100644
Binary files a/Plugins/dnlib.dll and b/Plugins/dnlib.dll differ