diff --git a/RecaptchaEnterprise/metadata/V1/Recaptchaenterprise.php b/RecaptchaEnterprise/metadata/V1/Recaptchaenterprise.php
index 8d57cc36a40b..969a45bf2739 100644
Binary files a/RecaptchaEnterprise/metadata/V1/Recaptchaenterprise.php and b/RecaptchaEnterprise/metadata/V1/Recaptchaenterprise.php differ
diff --git a/RecaptchaEnterprise/src/V1/Event.php b/RecaptchaEnterprise/src/V1/Event.php
index dd520e9e0e4a..95c5df6a7b2c 100644
--- a/RecaptchaEnterprise/src/V1/Event.php
+++ b/RecaptchaEnterprise/src/V1/Event.php
@@ -119,6 +119,12 @@ class Event extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>.google.cloud.recaptchaenterprise.v1.UserInfo user_info = 15 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
     private $user_info = null;
+    /**
+     * Optional. The Fraud Prevention setting for this assessment.
+     *
+     * Generated from protobuf field <code>.google.cloud.recaptchaenterprise.v1.Event.FraudPrevention fraud_prevention = 17 [(.google.api.field_behavior) = OPTIONAL];</code>
+     */
+    private $fraud_prevention = 0;
 
     /**
      * Constructor.
@@ -173,6 +179,8 @@ class Event extends \Google\Protobuf\Internal\Message
      *           can be identified. They are often identified through the use of an account
      *           for logged-in requests or login/registration requests, or by providing user
      *           identifiers for guest actions like checkout.
+     *     @type int $fraud_prevention
+     *           Optional. The Fraud Prevention setting for this assessment.
      * }
      */
     public function __construct($data = NULL) {
@@ -606,5 +614,31 @@ public function setUserInfo($var)
         return $this;
     }
 
+    /**
+     * Optional. The Fraud Prevention setting for this assessment.
+     *
+     * Generated from protobuf field <code>.google.cloud.recaptchaenterprise.v1.Event.FraudPrevention fraud_prevention = 17 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @return int
+     */
+    public function getFraudPrevention()
+    {
+        return $this->fraud_prevention;
+    }
+
+    /**
+     * Optional. The Fraud Prevention setting for this assessment.
+     *
+     * Generated from protobuf field <code>.google.cloud.recaptchaenterprise.v1.Event.FraudPrevention fraud_prevention = 17 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setFraudPrevention($var)
+    {
+        GPBUtil::checkEnum($var, \Google\Cloud\RecaptchaEnterprise\V1\Event\FraudPrevention::class);
+        $this->fraud_prevention = $var;
+
+        return $this;
+    }
+
 }
 
diff --git a/RecaptchaEnterprise/src/V1/Event/FraudPrevention.php b/RecaptchaEnterprise/src/V1/Event/FraudPrevention.php
new file mode 100644
index 000000000000..5650681f23e6
--- /dev/null
+++ b/RecaptchaEnterprise/src/V1/Event/FraudPrevention.php
@@ -0,0 +1,70 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto
+
+namespace Google\Cloud\RecaptchaEnterprise\V1\Event;
+
+use UnexpectedValueException;
+
+/**
+ * Setting that controls Fraud Prevention assessments.
+ *
+ * Protobuf type <code>google.cloud.recaptchaenterprise.v1.Event.FraudPrevention</code>
+ */
+class FraudPrevention
+{
+    /**
+     * Default, unspecified setting. If opted in for automatic detection,
+     * `fraud_prevention_assessment` is returned based on the request.
+     * Otherwise, `fraud_prevention_assessment` is returned if
+     * `transaction_data` is present in the `Event` and Fraud Prevention is
+     * enabled in the Google Cloud console.
+     *
+     * Generated from protobuf enum <code>FRAUD_PREVENTION_UNSPECIFIED = 0;</code>
+     */
+    const FRAUD_PREVENTION_UNSPECIFIED = 0;
+    /**
+     * Enable Fraud Prevention for this assessment, if Fraud Prevention is
+     * enabled in the Google Cloud console.
+     *
+     * Generated from protobuf enum <code>ENABLED = 1;</code>
+     */
+    const ENABLED = 1;
+    /**
+     * Disable Fraud Prevention for this assessment, regardless of opt-in
+     * status or Google Cloud console settings.
+     *
+     * Generated from protobuf enum <code>DISABLED = 2;</code>
+     */
+    const DISABLED = 2;
+
+    private static $valueToName = [
+        self::FRAUD_PREVENTION_UNSPECIFIED => 'FRAUD_PREVENTION_UNSPECIFIED',
+        self::ENABLED => 'ENABLED',
+        self::DISABLED => 'DISABLED',
+    ];
+
+    public static function name($value)
+    {
+        if (!isset(self::$valueToName[$value])) {
+            throw new UnexpectedValueException(sprintf(
+                    'Enum %s has no name defined for value %s', __CLASS__, $value));
+        }
+        return self::$valueToName[$value];
+    }
+
+
+    public static function value($name)
+    {
+        $const = __CLASS__ . '::' . strtoupper($name);
+        if (!defined($const)) {
+            throw new UnexpectedValueException(sprintf(
+                    'Enum %s has no value defined for name %s', __CLASS__, $name));
+        }
+        return constant($const);
+    }
+}
+
+// Adding a class alias for backwards compatibility with the previous class name.
+class_alias(FraudPrevention::class, \Google\Cloud\RecaptchaEnterprise\V1\Event_FraudPrevention::class);
+