diff --git a/src/OneflowSDK.php b/src/OneflowSDK.php
index bda475c..de0ebbb 100644
--- a/src/OneflowSDK.php
+++ b/src/OneflowSDK.php
@@ -35,6 +35,7 @@ public function __construct() {
 /**
  * OneflowSDK class.
  */
+#[AllowDynamicProperties]
 class OneflowSDK {
 
 	protected $url;
diff --git a/src/base.php b/src/base.php
index 501e399..ae8add3 100644
--- a/src/base.php
+++ b/src/base.php
@@ -15,6 +15,7 @@ class OneFlow {
 /**
  * OneFlowBase class.
  */
+#[AllowDynamicProperties]
 class OneFlowBase	{
 
 	private $__children = Array();