diff --git a/AiPlatform/metadata/V1/Content.php b/AiPlatform/metadata/V1/Content.php
index 2f518197707f..08bfd7dfd1f0 100644
Binary files a/AiPlatform/metadata/V1/Content.php and b/AiPlatform/metadata/V1/Content.php differ
diff --git a/AiPlatform/src/V1/GroundingChunk/RetrievedContext.php b/AiPlatform/src/V1/GroundingChunk/RetrievedContext.php
index add14f056d98..d827b5940307 100644
--- a/AiPlatform/src/V1/GroundingChunk/RetrievedContext.php
+++ b/AiPlatform/src/V1/GroundingChunk/RetrievedContext.php
@@ -27,6 +27,12 @@ class RetrievedContext extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>optional string title = 2;</code>
      */
     protected $title = null;
+    /**
+     * Text of the attribution.
+     *
+     * Generated from protobuf field <code>optional string text = 3;</code>
+     */
+    protected $text = null;
 
     /**
      * Constructor.
@@ -38,6 +44,8 @@ class RetrievedContext extends \Google\Protobuf\Internal\Message
      *           URI reference of the attribution.
      *     @type string $title
      *           Title of the attribution.
+     *     @type string $text
+     *           Text of the attribution.
      * }
      */
     public function __construct($data = NULL) {
@@ -117,6 +125,42 @@ public function setTitle($var)
         return $this;
     }
 
+    /**
+     * Text of the attribution.
+     *
+     * Generated from protobuf field <code>optional string text = 3;</code>
+     * @return string
+     */
+    public function getText()
+    {
+        return isset($this->text) ? $this->text : '';
+    }
+
+    public function hasText()
+    {
+        return isset($this->text);
+    }
+
+    public function clearText()
+    {
+        unset($this->text);
+    }
+
+    /**
+     * Text of the attribution.
+     *
+     * Generated from protobuf field <code>optional string text = 3;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setText($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->text = $var;
+
+        return $this;
+    }
+
 }
 
 
diff --git a/AiPlatform/src/V1/RetrievalMetadata.php b/AiPlatform/src/V1/RetrievalMetadata.php
index 8cf571a16f22..9c32e59b9ef9 100644
--- a/AiPlatform/src/V1/RetrievalMetadata.php
+++ b/AiPlatform/src/V1/RetrievalMetadata.php
@@ -16,11 +16,11 @@
 class RetrievalMetadata extends \Google\Protobuf\Internal\Message
 {
     /**
-     * Optional. Score indicating how likely information from google search could
+     * Optional. Score indicating how likely information from Google Search could
      * help answer the prompt. The score is in the range `[0, 1]`, where 0 is the
      * least likely and 1 is the most likely. This score is only populated when
-     * google search grounding and dynamic retrieval is enabled. It will be
-     * compared to the threshold to determine whether to trigger google search.
+     * Google Search grounding and dynamic retrieval is enabled. It will be
+     * compared to the threshold to determine whether to trigger Google Search.
      *
      * Generated from protobuf field <code>float google_search_dynamic_retrieval_score = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
@@ -33,11 +33,11 @@ class RetrievalMetadata extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type float $google_search_dynamic_retrieval_score
-     *           Optional. Score indicating how likely information from google search could
+     *           Optional. Score indicating how likely information from Google Search could
      *           help answer the prompt. The score is in the range `[0, 1]`, where 0 is the
      *           least likely and 1 is the most likely. This score is only populated when
-     *           google search grounding and dynamic retrieval is enabled. It will be
-     *           compared to the threshold to determine whether to trigger google search.
+     *           Google Search grounding and dynamic retrieval is enabled. It will be
+     *           compared to the threshold to determine whether to trigger Google Search.
      * }
      */
     public function __construct($data = NULL) {
@@ -46,11 +46,11 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * Optional. Score indicating how likely information from google search could
+     * Optional. Score indicating how likely information from Google Search could
      * help answer the prompt. The score is in the range `[0, 1]`, where 0 is the
      * least likely and 1 is the most likely. This score is only populated when
-     * google search grounding and dynamic retrieval is enabled. It will be
-     * compared to the threshold to determine whether to trigger google search.
+     * Google Search grounding and dynamic retrieval is enabled. It will be
+     * compared to the threshold to determine whether to trigger Google Search.
      *
      * Generated from protobuf field <code>float google_search_dynamic_retrieval_score = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @return float
@@ -61,11 +61,11 @@ public function getGoogleSearchDynamicRetrievalScore()
     }
 
     /**
-     * Optional. Score indicating how likely information from google search could
+     * Optional. Score indicating how likely information from Google Search could
      * help answer the prompt. The score is in the range `[0, 1]`, where 0 is the
      * least likely and 1 is the most likely. This score is only populated when
-     * google search grounding and dynamic retrieval is enabled. It will be
-     * compared to the threshold to determine whether to trigger google search.
+     * Google Search grounding and dynamic retrieval is enabled. It will be
+     * compared to the threshold to determine whether to trigger Google Search.
      *
      * Generated from protobuf field <code>float google_search_dynamic_retrieval_score = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @param float $var
diff --git a/AiPlatform/src/V1/VertexAISearch.php b/AiPlatform/src/V1/VertexAISearch.php
index 9c1e78170308..f1e9f9157e9f 100644
--- a/AiPlatform/src/V1/VertexAISearch.php
+++ b/AiPlatform/src/V1/VertexAISearch.php
@@ -10,14 +10,14 @@
 
 /**
  * Retrieve from Vertex AI Search datastore for grounding.
- * See https://cloud.google.com/vertex-ai-search-and-conversation
+ * See https://cloud.google.com/products/agent-builder
  *
  * Generated from protobuf message <code>google.cloud.aiplatform.v1.VertexAISearch</code>
  */
 class VertexAISearch extends \Google\Protobuf\Internal\Message
 {
     /**
-     * Required. Fully-qualified Vertex AI Search's datastore resource ID.
+     * Required. Fully-qualified Vertex AI Search data store resource ID.
      * Format:
      * `projects/{project}/locations/{location}/collections/{collection}/dataStores/{dataStore}`
      *
@@ -32,7 +32,7 @@ class VertexAISearch extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type string $datastore
-     *           Required. Fully-qualified Vertex AI Search's datastore resource ID.
+     *           Required. Fully-qualified Vertex AI Search data store resource ID.
      *           Format:
      *           `projects/{project}/locations/{location}/collections/{collection}/dataStores/{dataStore}`
      * }
@@ -43,7 +43,7 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * Required. Fully-qualified Vertex AI Search's datastore resource ID.
+     * Required. Fully-qualified Vertex AI Search data store resource ID.
      * Format:
      * `projects/{project}/locations/{location}/collections/{collection}/dataStores/{dataStore}`
      *
@@ -56,7 +56,7 @@ public function getDatastore()
     }
 
     /**
-     * Required. Fully-qualified Vertex AI Search's datastore resource ID.
+     * Required. Fully-qualified Vertex AI Search data store resource ID.
      * Format:
      * `projects/{project}/locations/{location}/collections/{collection}/dataStores/{dataStore}`
      *