diff --git a/CHANGES.rst b/CHANGES.rst
index 21d64ac..f22777f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -18,7 +18,7 @@ New features:
 
 Bug fixes:
 
-- ...
+- Stabelize timezone id lookup, see `Issue 780 <https://github.com/collective/icalendar/issues/780>`_.
 
 6.1.2 (2025-03-19)
 ------------------