diff --git a/ChangeLog b/ChangeLog
index 975b3ba..f5e5fa5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,6 +12,10 @@
      last paragraph).
    * Add support for packing multiple records within a single datagram,
      enabled by default.
+   * Add support for buffering out-of-order handshake messages.
+     The maximum amount of RAM used for this can be controlled by the
+     compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
+     in mbedtls/config.h.
 
 API Changes
    * Add function mbedtls_ssl_conf_datagram_packing() to configure