diff --git a/Changelog b/Changelog
index 8b87a7002304addb487f327617f6f2b9ca5f82ad..047e41977077ec561612751639d9d15c67c2337e 100644
--- a/Changelog
+++ b/Changelog
@@ -17,6 +17,8 @@
 Open Source Release <next-release>
 ##################################
 
+-   Metrics   [2020-10-01] Distinguish between undefined but specified functions
+              and functions with neither definition nor specification.
 -*  Eva       [2020-09-28] Improved string builtins on wide strings: crash fixed,
               better performance, misaligned pointers now considered invalid.
 -   Kernel    [2020-09-22] New option -autocomplete p1, ..., pn that list the