diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index ab845f736c..cd22413e22 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -5,6 +5,7 @@ CHANGELOG
 -----
 
  * added support for scalar values denormalization
+ * added support for `\stdClass` to `ObjectNormalizer`
 
 5.0.0
 -----