diff --git a/lucene/CHANGES.txt b/lucene/CHANGES.txt
index 2915ac6a212..5bb515d3cba 100644
--- a/lucene/CHANGES.txt
+++ b/lucene/CHANGES.txt
@@ -145,6 +145,7 @@ Bug Fixes
   in valid polygons. (Ignacio Vera)
 * GITHUB#13990: Added filter to the toString() method of Knn[Float|Byte]VectorQuery
   and DiversifyingChildren[Float|Byte]KnnVectorQuery. (Viswanath Kuchibhotla)
+* GITHUB#13819: Prevent flattening of ordered and unordered interval sources (Jim Ferenczi)
 
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