diff --git a/src/ServiceNetworking/ExperimentalFeatures.php b/src/ServiceNetworking/ExperimentalFeatures.php
index 00d9c34b20..c440919f88 100644
--- a/src/ServiceNetworking/ExperimentalFeatures.php
+++ b/src/ServiceNetworking/ExperimentalFeatures.php
@@ -19,11 +19,29 @@
 
 class ExperimentalFeatures extends \Google\Model
 {
+  /**
+   * @var bool
+   */
+  public $protobufPythonicTypesEnabled;
   /**
    * @var bool
    */
   public $restAsyncIoEnabled;
 
+  /**
+   * @param bool
+   */
+  public function setProtobufPythonicTypesEnabled($protobufPythonicTypesEnabled)
+  {
+    $this->protobufPythonicTypesEnabled = $protobufPythonicTypesEnabled;
+  }
+  /**
+   * @return bool
+   */
+  public function getProtobufPythonicTypesEnabled()
+  {
+    return $this->protobufPythonicTypesEnabled;
+  }
   /**
    * @param bool
    */