diff --git a/doc/notes/notes-9.19.23.rst b/doc/notes/notes-9.19.23.rst
index 1bbc4c09b9..b90c35c551 100644
--- a/doc/notes/notes-9.19.23.rst
+++ b/doc/notes/notes-9.19.23.rst
@@ -34,6 +34,9 @@ Feature Changes
 Bug Fixes
 ~~~~~~~~~
 
+- Some DNSSEC key rollovers were slowed down erroneously. This has been fixed.
+  :gl:`#4552`
+
 - Some ISO 8601 durations were accepted erroneously, leading to shorter
   durations than expected. This has been fixed. :gl:`#4624`