diff --git a/ChangeLog b/ChangeLog
index a3171d7eb4..36ffbee990 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
+= mbed TLS x.x.xx branch released xxxx-xx-xx
+
+Security
+   * Change default choice of DHE parameters from untrustworthy RFC 5114
+     to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
+     manner.
+
 = mbed TLS 1.3.21 branch released 2017-08-10
 
 Security