diff --git a/ChangeLog b/ChangeLog
index a3171d7..d2c5f6b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
+= mbed TLS 1.3.x released xxxx-xx-xx
+
+Security
+   * Fix buffer overflow in RSA-PSS verification when the hash is too
+     large for the key size. Found by Seth Terashima, Qualcomm Product
+     Security Initiative, Qualcomm Technologies Inc.
+
 = mbed TLS 1.3.21 branch released 2017-08-10
 
 Security