diff --git a/src/Serializer/AbstractConstraintViolationListNormalizer.php b/src/Serializer/AbstractConstraintViolationListNormalizer.php
index 35907174547..b602c7de4b8 100644
--- a/src/Serializer/AbstractConstraintViolationListNormalizer.php
+++ b/src/Serializer/AbstractConstraintViolationListNormalizer.php
@@ -80,6 +80,10 @@ protected function getMessagesAndViolations(ConstraintViolationListInterface $co
                 $violationData['hint'] = $hint;
             }
 
+            if ($cause = $violation->getCause() ?? false) {
+                $violationData['cause'] = $cause;
+            }
+
             $constraint = $violation instanceof ConstraintViolation ? $violation->getConstraint() : null;
             if (
                 [] !== $this->serializePayloadFields