diff --git a/CHANGELOG.md b/CHANGELOG.md
index bba235d..3670e35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.4.6] - 2025-01-14
+### Added
+- Include `AuthenticationResult` in `Transaction` class.
+
 ## [3.4.5] - 2024-11-05
 ### Added
 - Include `MerchantErrorMessage`, `CardHolderErrorMessage`, `CardHolderErrorMessage` and `CardHolderErrorMessage` in `CaptureReservationResponse` class.
diff --git a/src/AbstractApi.php b/src/AbstractApi.php
index 684df67..5f7a543 100644
--- a/src/AbstractApi.php
+++ b/src/AbstractApi.php
@@ -55,7 +55,7 @@ abstract class AbstractApi
     /**
      * PHP API version
      */
-    const PHP_API_VERSION = '3.4.5';
+    const PHP_API_VERSION = '3.4.6';
 
     /**
      * Event dispatcher
diff --git a/src/Response/Embeds/AuthenticationResult.php b/src/Response/Embeds/AuthenticationResult.php
new file mode 100644
index 0000000..d3f5ebd
--- /dev/null
+++ b/src/Response/Embeds/AuthenticationResult.php
@@ -0,0 +1,56 @@
+<?php
+/**
+ * Copyright (c) 2025 AltaPay
+ *
+ * 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.
+ */
+
+namespace Altapay\Response\Embeds;
+
+use Altapay\Response\AbstractResponse;
+
+class AuthenticationResult extends AbstractResponse
+{
+    /**
+     * @var "CHALLENGE"|"FRICTIONLESS"|"UNKNOWN"
+     */
+    public $Flow;
+
+    /**
+     * @var "MERCHANT"|"ISSUER"|"UNKNOWN"
+     */
+    public $Liability;
+
+    /**
+     * @var "AUTHENTICATED"|"ACCEPTED"|"NOT_AUTHENTICATED"|"FAILED"|"REJECTED"|"INFORMATIONAL"|"UNKNOWN"
+     */
+    public $Result;
+
+    /**
+     * Version in the format X.X.X (e.g. 1.0.0, 2.1.0, 2.2.3).
+     *
+     * @var string
+     */
+    public $Version;
+
+    /**
+     * @var "3DSECURE"
+     */
+    public $Type;
+}
diff --git a/src/Response/Embeds/Transaction.php b/src/Response/Embeds/Transaction.php
index 92b62e7..9cfdf2a 100644
--- a/src/Response/Embeds/Transaction.php
+++ b/src/Response/Embeds/Transaction.php
@@ -62,6 +62,10 @@ class Transaction extends AbstractResponse
         'CardInformation'          => [
             'class' => CardInformation::class,
             'array' => false
+        ],
+        'AuthenticationResult'     => [
+            'class' => AuthenticationResult::class,
+            'array' => false
         ]
     ];
 
@@ -285,6 +289,11 @@ class Transaction extends AbstractResponse
      */
     public $InvoiceOrderInfo;
 
+    /**
+     * @var AuthenticationResult
+     */
+    public $AuthenticationResult;
+
     /**
      * @param string $IsTokenized
      *