diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index d642084350..8cbd61aa22 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -4,7 +4,18 @@ CHANGELOG
 3.1.0
 -----
 
-* added support for serializing objects that implement `JsonSerializable`
+ * added support for serializing objects that implement `JsonSerializable`
+ * added the `DenormalizerAwareTrait` and `NormalizerAwareTrait` traits to
+   support normalizer/denormalizer awareness
+ * added the `DenormalizerAwareInterface` and `NormalizerAwareInterface`
+   interfaces to support normalizer/denormalizer awareness
+ * added a PSR-6 compatible adapter for caching metadata
+ * added a `MaxDepth` option to limit the depth of the object graph when
+   serializing objects
+ * added support for serializing `SplFileInfo` objects
+ * added support for serializing objects that implement `DateTimeInterface`
+ * added `AbstractObjectNormalizer` as a base class for normalizers that deal
+   with objects
 
 2.7.0
 -----