diff --git a/CHANGELOG.md b/CHANGELOG.md
index 696e255..686e54c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## 4.1.1 (Oct 24, 2025)
+### Features
+- Added `SetPushTriggerOption` to `SendbirdChatClient`
+
+### Bug Fixes
+- Fixed an issue with `SendbirdChat.BlockUser` where 'User not found error' occurs due to URL encoding
 ## 4.1.0 (Nov 29, 2024)
 ### Features
 - Added `SetPushTriggerOption` to `SendbirdChatClient`
diff --git a/Runtime/Plugins/WebGL/SendbirdWebSocket.jslib.meta b/Runtime/Plugins/WebGL/SendbirdWebSocket.jslib.meta
index dd47d31..70d8f60 100644
--- a/Runtime/Plugins/WebGL/SendbirdWebSocket.jslib.meta
+++ b/Runtime/Plugins/WebGL/SendbirdWebSocket.jslib.meta
@@ -1,3 +1,32 @@
 fileFormatVersion: 2
 guid: 97c26cf6f5704fbc91d0c13a43a99de5
-timeCreated: 1725605334
\ No newline at end of file
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 1
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      Any: 
+    second:
+      enabled: 0
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        DefaultValueInitialized: true
+  - first:
+      WebGL: WebGL
+    second:
+      enabled: 1
+      settings: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Scripts/Internal/Command/CommandRouter.cs b/Runtime/Scripts/Internal/Command/CommandRouter.cs
index 073079d..9ad39a2 100644
--- a/Runtime/Scripts/Internal/Command/CommandRouter.cs
+++ b/Runtime/Scripts/Internal/Command/CommandRouter.cs
@@ -392,13 +392,14 @@ private WsClientConnectParams CreateWebSocketClientConnectParams(string inWebSoc
                 
 #if UNITY_WEBGL
                 uriStringBuilder.Append($"&{ConnectionHeaders.REQUEST_SENT_TIMESTAMP.Name}={ConnectionHeaders.REQUEST_SENT_TIMESTAMP.Value}");
+#else
+                uriStringBuilder.Append($"&{ConnectionHeaders.USER_AGENT.Name}={ConnectionHeaders.USER_AGENT.Value}");
 #endif
             }
 
             WsClientConnectParams wsClientConnectParams = new WsClientConnectParams(uriStringBuilder.ToString());
             {
 #if !UNITY_WEBGL
-                wsClientConnectParams.CustomHeaders.Add(ConnectionHeaders.USER_AGENT.Name, ConnectionHeaders.USER_AGENT.Value);
                 wsClientConnectParams.CustomHeaders.Add(ConnectionHeaders.REQUEST_SENT_TIMESTAMP.Name, ConnectionHeaders.REQUEST_SENT_TIMESTAMP.Value);
 #endif
 
diff --git a/Runtime/Scripts/UnityPlatform/UnityPlatformApplication.cs b/Runtime/Scripts/UnityPlatform/UnityPlatformApplication.cs
index 681fa51..d152edb 100644
--- a/Runtime/Scripts/UnityPlatform/UnityPlatformApplication.cs
+++ b/Runtime/Scripts/UnityPlatform/UnityPlatformApplication.cs
@@ -9,7 +9,9 @@ namespace Sendbird.Chat
 {
     internal class UnityPlatformApplication : IPlatformApplication
     {
-        string IPlatformApplication.SdkVersion => "4.1.0";
+        // NOTE: This version is automatically updated by the PublishPackage workflow during deployment.
+        // Only update manually when making releases outside of the automated workflow.
+        string IPlatformApplication.SdkVersion => "4.1.1";
         string IPlatformApplication.PlatformName => "Unity";
         string IPlatformApplication.PlatformVersion => Application.unityVersion;
         string IPlatformApplication.OsName => Application.platform.ToString();
diff --git a/package.json b/package.json
index a25995f..227edf9 100644
--- a/package.json
+++ b/package.json
@@ -1,11 +1,11 @@
 {
   "name": "com.sendbird.chat",
   "displayName": "SendbirdChat",
-  "version": "4.1.0",
+  "version": "4.1.1",
   "documentationUrl": "https://github.com/sendbird/sendbird-chat-sdk-unity",
   "changelogUrl": "https://github.com/sendbird/sendbird-chat-sdk-unity/blob/master/CHANGELOG.md",
   "licensesUrl": "https://github.com/sendbird/sendbird-chat-sdk-unity/blob/master/LICENSE.md",
-  "description": "The Sendbird Chat SDK for Unity allows you to add real-time chat into your client app with minimal effort. Sendbird offers a feature rich, scalable, and proven chat solution depended on by companies like Reddit, Hinge, PubG and Paytm.",
+  "description": "The Sendbird Chat SDK for Unity allows you to add real-time chat into your client app with minimal effort. Sendbird offers a feature rich, scalable, and proven chat solution.",
   "dependencies": {
     "com.unity.nuget.newtonsoft-json": "2.0.0"
   },