diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35f0608c5e..db55b8a298 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ _**ALL OLD DEPRECATIONS WERE REMOVED**_
 
 * `Core`:
     * Type `ChatType` has been added
+    * New `ExtendedChat` for unknown messages `UnknownExtendedChat` has been added
     * `SendInvoice#startParameter` becomes optional and replaced in `SendInvoice` constructor
     * New interface `CommonSendInvoiceData` has been added
         * Fields `CommonSendInvoiceData#maxTipAmount` and `CommonSendInvoiceData#suggestedTipAmounts` have been added