diff --git a/application/libraries/datamapper.php b/application/libraries/datamapper.php
index 0b5232c..5950971 100644
--- a/application/libraries/datamapper.php
+++ b/application/libraries/datamapper.php
@@ -191,6 +191,7 @@
  * Nestedsets Extension:
  *
  */
+#[\AllowDynamicProperties]
 class DataMapper implements IteratorAggregate {
 
 	/**