diff --git a/ChangeLog b/ChangeLog
index 513f24f..9b89c4d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,10 @@
      invalidated keys of a lifetime of less than a 1s. Fixes #1968.
    * Fix failure in hmac_drbg in the benchmark sample application, when
      MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
+   * Zeroize memory used for buffering or reassembling handshake messages
+     after use.
+   * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
+     of sensitive data in the example programs aescrypt2 and crypt_and_hash.
 
 Changes
    * Add tests for session resumption in DTLS.