--- a/application/tests/_ci_phpunit_test/CIPHPUnitTestCase.php
+++ b/application/tests/_ci_phpunit_test/CIPHPUnitTestCase.php
@@ -21,6 +21,7 @@
  * @property CIPHPUnitTestDouble     $double
  * @property CIPHPUnitTestReflection $reflection
  */
+#[AllowDynamicProperties]
 class CIPHPUnitTestCase extends TestCase
 {
 	protected $_error_reporting = -1;
