diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92c3758b52..9100761d4a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - new `drop:holds()` lock default to limit dropping nonsensical things. Access check
   defaults to True for backwards-compatibility in 0.9, will be False in 1.0
+- Added content_types indexing to DefaultObject's ContentsHandler.
 
 ### Already in master
 - `is_typeclass(obj (Object), exact (bool))` now defaults to exact=False