diff --git a/NEWS.md b/NEWS.md
index 44772f8..0debc10 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,7 @@
 
 * Development version bump following the 0.3.0 CRAN release.
 
+<!-- audit-ok:upstream-api: the next line names the REMOVED function on purpose -->
 * Internal, with no change to any output: the unused `thinr::is_border_4()`
   helper was removed from `src/thinr_common.h`. Its last callers were the
   stentiford and pavlidis kernels, dropped 2026-05-20; nothing has referenced