diff --git a/src/Classes/Party.php b/src/Classes/Party.php
index 7145a66..818543e 100644
--- a/src/Classes/Party.php
+++ b/src/Classes/Party.php
@@ -7,6 +7,7 @@
 /**
  * Class Party
  */
+#[\AllowDynamicProperties]
 class Party implements PartyContract
 {
     public $custom_fields;