diff --git a/CHANGELOG-2.1.md b/CHANGELOG-2.1.md
index d0e7af26f9..6605cdfa06 100644
--- a/CHANGELOG-2.1.md
+++ b/CHANGELOG-2.1.md
@@ -96,6 +96,7 @@ To get the diff between two versions, go to https://github.com/symfony/symfony/c
 ### Config
 
  * implemented `Serializable` on resources
+ * LoaderResolverInterface is now used instead of LoaderResolver for type hinting
 
 ### Console