diff --git a/source/Spiral/Models/Accessors/AbstractTimestamp.php b/source/Spiral/Models/Accessors/AbstractTimestamp.php
index bb1f6ce16..ffb775d0e 100644
--- a/source/Spiral/Models/Accessors/AbstractTimestamp.php
+++ b/source/Spiral/Models/Accessors/AbstractTimestamp.php
@@ -122,7 +122,7 @@ abstract protected function fetchTimestamp($value): int;
      */
     protected function castTimestamp($datetime, \DateTimeZone $timezone = null)
     {
-        if ($datetime instanceof \DateTime) {
+        if ($datetime instanceof \DateTimeInterface) {
             return $datetime->getTimestamp();
         }