Add changes item for LUCENE-10054
diff --git a/lucene/CHANGES.txt b/lucene/CHANGES.txt
index 49f4256..376ac73 100644
--- a/lucene/CHANGES.txt
+++ b/lucene/CHANGES.txt
@@ -153,6 +153,9 @@
 * LUCENE-10229: Unify behaviour of match offsets for interval queries on fields
   with or without offsets enabled. (Patrick Zhai)
 
+* LUCENE-10054 Make HnswGraph hierarchical (Mayya Sharipova, Julie Tibshirani, Mike Sokolov,
+  Adrien Grand)
+
 Optimizations
 ---------------------