diff --git a/ChangeLog.d/resumption_cid.txt b/ChangeLog.d/resumption_cid.txt
index d6d74b8777..0cdd4fc6aa 100644
--- a/ChangeLog.d/resumption_cid.txt
+++ b/ChangeLog.d/resumption_cid.txt
@@ -1,4 +1,5 @@
 Bugfix
-   * Fix a bug where the connection ID extension on client side would not work
-     after a session resumption took place. This caused the client to not
-     recognize records containing a CID and drop them.
+   * Fix server connection identifier setting for outgoing encrypted records
+     on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
+     connection identifier, the Mbed TLS client now sends properly the server
+     connection identifier in encrypted record headers. Fix #5872.