diff --git a/doc/release-notes.md b/doc/release-notes.md
index e9653744d..7b16ac292 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -1,6 +1,9 @@
 # Bitcoin ABC 0.23.9 Release Notes
 
 Bitcoin ABC version 0.23.9 is now available from:
 
   <https://download.bitcoinabc.org/0.23.9/>
 
+This release includes the following features and fixes:
+  - Improvements to the Avalanche experimental feature.
+  - Test performance improvements.