diff --git a/src/Models/Attributes/Timestamp.php b/src/Models/Attributes/Timestamp.php
index 4046eb71..d03e106d 100644
--- a/src/Models/Attributes/Timestamp.php
+++ b/src/Models/Attributes/Timestamp.php
@@ -190,7 +190,7 @@ protected function convertWindowsIntegerTimeToDateTime(string|int|null $value =
         }
 
         return (new DateTime)->setTimestamp(
-            (int) ($value / 10000000) - 11644473600
+            (int) (round($value / 10000000) - 11644473600)
         );
     }
 
diff --git a/tests/Unit/Models/Attributes/TimestampTest.php b/tests/Unit/Models/Attributes/TimestampTest.php
index c852437a..a0678c10 100644
--- a/tests/Unit/Models/Attributes/TimestampTest.php
+++ b/tests/Unit/Models/Attributes/TimestampTest.php
@@ -154,7 +154,7 @@ public function test_windows_int_type_rounds_correctly()
         foreach (['133692539995000000', '133692539999500000'] as $windowsIntegerTime) {
             $dateTime = $timestamp->toDateTime($windowsIntegerTime);
 
-            $expectedUnixTimestamp = (int) ($windowsIntegerTime / 10000000) - 11644473600;
+            $expectedUnixTimestamp = (int) (round($windowsIntegerTime / 10000000) - 11644473600);
 
             $this->assertEquals($expectedUnixTimestamp, $dateTime->getTimestamp());
         }