diff --git a/doc/Changelog b/doc/Changelog
index 3988d0c9d..c00a1a29f 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,3 +1,7 @@
+26 July 2021: Wouter
+	- Merge #512: unbound.service.in: upgrade hardening to latest
+	  standards.
+
 21 July 2021: Wouter
 	- Fix that ldns_zone_new_frm_fp_l counts the line number for an empty
 	  line after a comment.