diff --git a/Scripts/Runtime/Core/Settings.cs b/Scripts/Runtime/Core/Settings.cs
index cd97113..d3dd503 100644
--- a/Scripts/Runtime/Core/Settings.cs
+++ b/Scripts/Runtime/Core/Settings.cs
@@ -7,7 +7,7 @@ public static class Settings
         public const string QQ_GROUP_LINK = "https://qm.qq.com/cgi-bin/qm/qr?k=KcexYJ9aYwogFXbj2aN0XHH5b2G7ICmd";
         public const string EMAIL = "799329256@qq.com";
         public const string AUHTOR = "psygame";
-        public const string VERSION = "2.4.4";
+        public const string VERSION = "2.4.5";
         public const string PACKAGE_NAME = "com.psygame.unitywebsocket";
         public const string UPM_URL = "https://github.com/psygame/UnityWebSocket.git";
     }
diff --git a/Scripts/Runtime/Implementation/WebGL/WebSocket.cs b/Scripts/Runtime/Implementation/WebGL/WebSocket.cs
index 2044922..ca1caaa 100644
--- a/Scripts/Runtime/Implementation/WebGL/WebSocket.cs
+++ b/Scripts/Runtime/Implementation/WebGL/WebSocket.cs
@@ -1,3 +1,4 @@
+#if UNITY_EDITOR || UNITY_WEBGL
 using System;
 
 namespace UnityWebSocket.WebGL
@@ -84,3 +85,4 @@ public void SendAsync(byte[] data)
         }
     }
 }
+#endif
\ No newline at end of file
diff --git a/Scripts/Runtime/Implementation/WebGL/WebSocketManager.cs b/Scripts/Runtime/Implementation/WebGL/WebSocketManager.cs
index be79e92..cc60432 100644
--- a/Scripts/Runtime/Implementation/WebGL/WebSocketManager.cs
+++ b/Scripts/Runtime/Implementation/WebGL/WebSocketManager.cs
@@ -1,4 +1,5 @@
-using System;
+#if UNITY_EDITOR || UNITY_WEBGL
+using System;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using AOT;
@@ -169,4 +170,5 @@ public static string GetErrorMessageFromCode(int errorCode)
             }
         }
     }
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file
diff --git a/package.json b/package.json
index 05883e0..5814325 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "com.psygame.unitywebsocket",
   "displayName": "UnityWebSocket",
-  "version": "2.4.4",
+  "version": "2.4.5",
   "unity": "2018.3",
   "description": "The Best Unity WebSocket Plugin for All Platforms.",
   "keywords": [