diff --git a/src/Facebook/GraphNodes/GraphNode.php b/src/Facebook/GraphNodes/GraphNode.php
index a81c47b7b..fecd51474 100644
--- a/src/Facebook/GraphNodes/GraphNode.php
+++ b/src/Facebook/GraphNodes/GraphNode.php
@@ -151,7 +151,12 @@ public function shouldCastAsDateTime($key)
             'issued_at',
             'expires_at',
             'publish_time',
-            'joined'
+            'joined',
+            'left_time',
+            'seen_time',
+            'start_date',
+            'account_invite_time',
+            'account_claim_time'
         ], true);
     }