diff --git a/NEWS b/NEWS
index be44f143..b961f9df 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,9 @@ GNU M4 NEWS - User visible changes.
    accept as an integer literal, rather than silently treating it as zero
    (present since "the beginning").
 
+** Port to glibc 2.43, which implements functions like strchr as macros
+   when compiled with a C23 compiler.
+
 
 * Noteworthy changes in release 1.4.20 (2025-05-10) [stable]