diff --git a/doc/Changelog b/doc/Changelog
index 7dc5820fc..7c03d428b 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,6 +1,7 @@
 20 August 2021: Wouter
 	- Fix #529: Fix: log_assert does nothing if UNBOUND_DEBUG is
 	  undefined.
+	- Fix #531: Fix: passed to proc after free.
 
 17 August 2021: Wouter
 	- Fix that --with-ssl can use "/usr/include/openssl11" to pass the