diff --git a/ChangeLog b/ChangeLog
index 67332bf..110398e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,6 +14,8 @@
 Changes
    * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
      required on some platforms (e.g. OpenBSD)
+   * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
+     against unwanted compiler optimizations
 
 Bugfix
    * Fix in debug_print_msg()