diff --git a/ChangeLog b/ChangeLog
index 44533d2..ed0f1d8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -22,6 +22,9 @@
 Changes
    * Change the shebang line in Perl scripts to look up perl in the PATH.
      Contributed by fbrosson.
+   * Provide Mbed TLS wrapper for vsnprintf used in debug.c. Based on
+     contributions by Joris Aerts in #761 and Nathaniel Wesley Filardo in
+     #1381.
 
 = mbed TLS 2.11.0 branch released 2018-06-18