diff --git a/Dialogflow/metadata/V2/AudioConfig.php b/Dialogflow/metadata/V2/AudioConfig.php
index e76fe515261e..2731adb42d26 100644
Binary files a/Dialogflow/metadata/V2/AudioConfig.php and b/Dialogflow/metadata/V2/AudioConfig.php differ
diff --git a/Dialogflow/metadata/V2/ConversationDataset.php b/Dialogflow/metadata/V2/ConversationDataset.php
index 3dc08562a3e4..647e421711bd 100644
Binary files a/Dialogflow/metadata/V2/ConversationDataset.php and b/Dialogflow/metadata/V2/ConversationDataset.php differ
diff --git a/Dialogflow/src/V2/AudioEncoding.php b/Dialogflow/src/V2/AudioEncoding.php
index ee0084582a04..e630d149e731 100644
--- a/Dialogflow/src/V2/AudioEncoding.php
+++ b/Dialogflow/src/V2/AudioEncoding.php
@@ -83,6 +83,12 @@ class AudioEncoding
      * Generated from protobuf enum <code>AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE = 7;</code>
      */
     const AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE = 7;
+    /**
+     * 8-bit samples that compand 13-bit audio samples using G.711 PCMU/a-law.
+     *
+     * Generated from protobuf enum <code>AUDIO_ENCODING_ALAW = 8;</code>
+     */
+    const AUDIO_ENCODING_ALAW = 8;
 
     private static $valueToName = [
         self::AUDIO_ENCODING_UNSPECIFIED => 'AUDIO_ENCODING_UNSPECIFIED',
@@ -93,6 +99,7 @@ class AudioEncoding
         self::AUDIO_ENCODING_AMR_WB => 'AUDIO_ENCODING_AMR_WB',
         self::AUDIO_ENCODING_OGG_OPUS => 'AUDIO_ENCODING_OGG_OPUS',
         self::AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE => 'AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE',
+        self::AUDIO_ENCODING_ALAW => 'AUDIO_ENCODING_ALAW',
     ];
 
     public static function name($value)
diff --git a/Dialogflow/src/V2/ConversationDataset.php b/Dialogflow/src/V2/ConversationDataset.php
index 8a069cc231a1..8b57a60a7f3b 100644
--- a/Dialogflow/src/V2/ConversationDataset.php
+++ b/Dialogflow/src/V2/ConversationDataset.php
@@ -63,6 +63,20 @@ class ConversationDataset extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>int64 conversation_count = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      */
     private $conversation_count = 0;
+    /**
+     * Output only. A read only boolean field reflecting Zone Isolation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzi = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     */
+    private $satisfies_pzi = null;
+    /**
+     * Output only. A read only boolean field reflecting Zone Separation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzs = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     */
+    private $satisfies_pzs = null;
 
     /**
      * Constructor.
@@ -87,6 +101,12 @@ class ConversationDataset extends \Google\Protobuf\Internal\Message
      *     @type int|string $conversation_count
      *           Output only. The number of conversations this conversation dataset
      *           contains.
+     *     @type bool $satisfies_pzi
+     *           Output only. A read only boolean field reflecting Zone Isolation status of
+     *           the dataset.
+     *     @type bool $satisfies_pzs
+     *           Output only. A read only boolean field reflecting Zone Separation status of
+     *           the dataset.
      * }
      */
     public function __construct($data = NULL) {
@@ -312,5 +332,81 @@ public function setConversationCount($var)
         return $this;
     }
 
+    /**
+     * Output only. A read only boolean field reflecting Zone Isolation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzi = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @return bool
+     */
+    public function getSatisfiesPzi()
+    {
+        return isset($this->satisfies_pzi) ? $this->satisfies_pzi : false;
+    }
+
+    public function hasSatisfiesPzi()
+    {
+        return isset($this->satisfies_pzi);
+    }
+
+    public function clearSatisfiesPzi()
+    {
+        unset($this->satisfies_pzi);
+    }
+
+    /**
+     * Output only. A read only boolean field reflecting Zone Isolation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzi = 8 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @param bool $var
+     * @return $this
+     */
+    public function setSatisfiesPzi($var)
+    {
+        GPBUtil::checkBool($var);
+        $this->satisfies_pzi = $var;
+
+        return $this;
+    }
+
+    /**
+     * Output only. A read only boolean field reflecting Zone Separation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzs = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @return bool
+     */
+    public function getSatisfiesPzs()
+    {
+        return isset($this->satisfies_pzs) ? $this->satisfies_pzs : false;
+    }
+
+    public function hasSatisfiesPzs()
+    {
+        return isset($this->satisfies_pzs);
+    }
+
+    public function clearSatisfiesPzs()
+    {
+        unset($this->satisfies_pzs);
+    }
+
+    /**
+     * Output only. A read only boolean field reflecting Zone Separation status of
+     * the dataset.
+     *
+     * Generated from protobuf field <code>optional bool satisfies_pzs = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * @param bool $var
+     * @return $this
+     */
+    public function setSatisfiesPzs($var)
+    {
+        GPBUtil::checkBool($var);
+        $this->satisfies_pzs = $var;
+
+        return $this;
+    }
+
 }
 
diff --git a/Dialogflow/src/V2/OutputAudioEncoding.php b/Dialogflow/src/V2/OutputAudioEncoding.php
index b8821bce4def..5ddca3f8b2c8 100644
--- a/Dialogflow/src/V2/OutputAudioEncoding.php
+++ b/Dialogflow/src/V2/OutputAudioEncoding.php
@@ -53,6 +53,12 @@ class OutputAudioEncoding
      * Generated from protobuf enum <code>OUTPUT_AUDIO_ENCODING_MULAW = 5;</code>
      */
     const OUTPUT_AUDIO_ENCODING_MULAW = 5;
+    /**
+     * 8-bit samples that compand 13-bit audio samples using G.711 PCMU/a-law.
+     *
+     * Generated from protobuf enum <code>OUTPUT_AUDIO_ENCODING_ALAW = 6;</code>
+     */
+    const OUTPUT_AUDIO_ENCODING_ALAW = 6;
 
     private static $valueToName = [
         self::OUTPUT_AUDIO_ENCODING_UNSPECIFIED => 'OUTPUT_AUDIO_ENCODING_UNSPECIFIED',
@@ -61,6 +67,7 @@ class OutputAudioEncoding
         self::OUTPUT_AUDIO_ENCODING_MP3_64_KBPS => 'OUTPUT_AUDIO_ENCODING_MP3_64_KBPS',
         self::OUTPUT_AUDIO_ENCODING_OGG_OPUS => 'OUTPUT_AUDIO_ENCODING_OGG_OPUS',
         self::OUTPUT_AUDIO_ENCODING_MULAW => 'OUTPUT_AUDIO_ENCODING_MULAW',
+        self::OUTPUT_AUDIO_ENCODING_ALAW => 'OUTPUT_AUDIO_ENCODING_ALAW',
     ];
 
     public static function name($value)
diff --git a/Dialogflow/tests/Unit/V2/Client/ConversationDatasetsClientTest.php b/Dialogflow/tests/Unit/V2/Client/ConversationDatasetsClientTest.php
index 29e8ce86a2ce..a287e5040f93 100644
--- a/Dialogflow/tests/Unit/V2/Client/ConversationDatasetsClientTest.php
+++ b/Dialogflow/tests/Unit/V2/Client/ConversationDatasetsClientTest.php
@@ -101,11 +101,15 @@ public function createConversationDatasetTest()
         $displayName = 'displayName1615086568';
         $description = 'description-1724546052';
         $conversationCount = 1994187347;
+        $satisfiesPzi = false;
+        $satisfiesPzs = false;
         $expectedResponse = new ConversationDataset();
         $expectedResponse->setName($name);
         $expectedResponse->setDisplayName($displayName);
         $expectedResponse->setDescription($description);
         $expectedResponse->setConversationCount($conversationCount);
+        $expectedResponse->setSatisfiesPzi($satisfiesPzi);
+        $expectedResponse->setSatisfiesPzs($satisfiesPzs);
         $anyResponse = new Any();
         $anyResponse->setValue($expectedResponse->serializeToString());
         $completeOperation = new Operation();
@@ -349,11 +353,15 @@ public function getConversationDatasetTest()
         $displayName = 'displayName1615086568';
         $description = 'description-1724546052';
         $conversationCount = 1994187347;
+        $satisfiesPzi = false;
+        $satisfiesPzs = false;
         $expectedResponse = new ConversationDataset();
         $expectedResponse->setName($name2);
         $expectedResponse->setDisplayName($displayName);
         $expectedResponse->setDescription($description);
         $expectedResponse->setConversationCount($conversationCount);
+        $expectedResponse->setSatisfiesPzi($satisfiesPzi);
+        $expectedResponse->setSatisfiesPzs($satisfiesPzs);
         $transport->addResponse($expectedResponse);
         // Mock request
         $formattedName = $gapicClient->conversationDatasetName('[PROJECT]', '[LOCATION]', '[CONVERSATION_DATASET]');
@@ -758,11 +766,15 @@ public function createConversationDatasetAsyncTest()
         $displayName = 'displayName1615086568';
         $description = 'description-1724546052';
         $conversationCount = 1994187347;
+        $satisfiesPzi = false;
+        $satisfiesPzs = false;
         $expectedResponse = new ConversationDataset();
         $expectedResponse->setName($name);
         $expectedResponse->setDisplayName($displayName);
         $expectedResponse->setDescription($description);
         $expectedResponse->setConversationCount($conversationCount);
+        $expectedResponse->setSatisfiesPzi($satisfiesPzi);
+        $expectedResponse->setSatisfiesPzs($satisfiesPzs);
         $anyResponse = new Any();
         $anyResponse->setValue($expectedResponse->serializeToString());
         $completeOperation = new Operation();
diff --git a/Dialogflow/tests/Unit/V2/ConversationDatasetsClientTest.php b/Dialogflow/tests/Unit/V2/ConversationDatasetsClientTest.php
index dad31af1cf44..ff246344e4d4 100644
--- a/Dialogflow/tests/Unit/V2/ConversationDatasetsClientTest.php
+++ b/Dialogflow/tests/Unit/V2/ConversationDatasetsClientTest.php
@@ -94,11 +94,15 @@ public function createConversationDatasetTest()
         $displayName = 'displayName1615086568';
         $description = 'description-1724546052';
         $conversationCount = 1994187347;
+        $satisfiesPzi = false;
+        $satisfiesPzs = false;
         $expectedResponse = new ConversationDataset();
         $expectedResponse->setName($name);
         $expectedResponse->setDisplayName($displayName);
         $expectedResponse->setDescription($description);
         $expectedResponse->setConversationCount($conversationCount);
+        $expectedResponse->setSatisfiesPzi($satisfiesPzi);
+        $expectedResponse->setSatisfiesPzs($satisfiesPzs);
         $anyResponse = new Any();
         $anyResponse->setValue($expectedResponse->serializeToString());
         $completeOperation = new Operation();
@@ -332,11 +336,15 @@ public function getConversationDatasetTest()
         $displayName = 'displayName1615086568';
         $description = 'description-1724546052';
         $conversationCount = 1994187347;
+        $satisfiesPzi = false;
+        $satisfiesPzs = false;
         $expectedResponse = new ConversationDataset();
         $expectedResponse->setName($name2);
         $expectedResponse->setDisplayName($displayName);
         $expectedResponse->setDescription($description);
         $expectedResponse->setConversationCount($conversationCount);
+        $expectedResponse->setSatisfiesPzi($satisfiesPzi);
+        $expectedResponse->setSatisfiesPzs($satisfiesPzs);
         $transport->addResponse($expectedResponse);
         // Mock request
         $formattedName = $gapicClient->conversationDatasetName('[PROJECT]', '[LOCATION]', '[CONVERSATION_DATASET]');