diff --git a/NEWS.md b/NEWS.md
index 1a0e73dc293ea..34827f814a584 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -106,6 +106,9 @@ Library improvements
 
     * `CharString` is renamed to `UTF32String` ([#4943]).
 
+    * `normalize_string` function to perform Unicode normalization, case-folding,
+      and other transformations ([#5576]).
+
   * `LinAlg` (linear algebra) improvements
 
       * Balancing options for eigenvector calculations for general matrices ([#5428]).