diff --git a/CHANGELOG-2.1.md b/CHANGELOG-2.1.md
index d72a196779..5177b1e8aa 100644
--- a/CHANGELOG-2.1.md
+++ b/CHANGELOG-2.1.md
@@ -299,6 +299,7 @@ To get the diff between two versions, go to https://github.com/symfony/symfony/c
  * made ExecutionContext immutable
  * deprecated Constraint methods `setMessage`, `getMessageTemplate` and
    `getMessageParameters`
+ * added support for dynamic group sequences with the GroupSequenceProvider pattern
 
 ### Yaml