diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77bc05665..5efbdd1b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,21 @@
 # Changelog
 
-## 3.21.0 - 2023-11-18
+## 3.21.0 - 2023-12-03
 
 ### Changes
 
 - Retain visibility on local copy for local FS, in line with other adapter (#1730) by @jnoordsij
+- Prevent double directory creation with lazy root creation for Local filesystem.
+
+### Fixes
+
+- Resolve to "inconclusive" mimetype instead of causing a type error by @GuySartorelli
+- Corrected spelling of a configuration key for the Azure adapter by @shineability
+
+### Additions
+
+- MountManager::extend allows for immutable dynamic extension of the mount manager.
+- Added a new abstract DecoratedAdapter for easier decoration of adapters by @jnoordsij
 
 ## 3.20.0 - 2023-11-14