diff --git a/ChangeLog b/ChangeLog
index 0a9dc4f..08790e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,8 @@
    * Close a test gap in (D)TLS between the client side and the server side:
      test the handling of large packets and small packets on the client side
      in the same way as on the server side.
+   * Change the dtls_client and dtls_server samples to work by default over
+     IPv6 and optionally by a build option over IPv4.
 
 = mbed TLS 2.7.6 branch released 2018-08-31