diff --git a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
index f431b6ec04bf..fd2808ab7add 100644
--- a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
+++ b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
@@ -329,7 +329,7 @@ protected function validateConfirmed($attribute, $value)
      */
     protected function validateDate($attribute, $value)
     {
-        if ($value instanceof DateTime) {
+        if ($value instanceof DateTimeInterface) {
             return true;
         }
 
diff --git a/tests/Validation/ValidationValidatorTest.php b/tests/Validation/ValidationValidatorTest.php
index ffbd491c5e49..be7b194d250a 100755
--- a/tests/Validation/ValidationValidatorTest.php
+++ b/tests/Validation/ValidationValidatorTest.php
@@ -4,6 +4,7 @@
 
 use DateTime;
 use Mockery as m;
+use DateTimeImmutable;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Carbon;
 use PHPUnit\Framework\TestCase;
@@ -2274,6 +2275,9 @@ public function testValidateDateAndFormat()
         $v = new Validator($trans, ['x' => new DateTime], ['x' => 'date']);
         $this->assertTrue($v->passes());
 
+        $v = new Validator($trans, ['x' => new DateTimeImmutable], ['x' => 'date']);
+        $this->assertTrue($v->passes());
+
         $v = new Validator($trans, ['x' => '2000-01-01'], ['x' => 'date_format:Y-m-d']);
         $this->assertTrue($v->passes());