diff --git a/NEWS b/NEWS
index 0236768..cf73df0 100644
--- a/NEWS
+++ b/NEWS
@@ -59,6 +59,7 @@ with all sufficient information, see the ChangeLog file.
       by deleting the specified row and column.
     * Matrix#cofactor(row, column) returns the (row, column) cofactor
       which is obtained by multiplying the first minor by (-1)**(row + column).
+    * Matrix#row_merge(*matrices), Matrix#merge(*matrices) Merge matrices between rows.
     * Matrix#column_merge(*matrices) Merge matrices between columns.

 * Method