diff --git a/Makefile.am b/Makefile.am
index ecd491bbf1..f4155f01b6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 # GNU Guix --- Functional package management for GNU
-# Copyright © 2012-2024 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2012-2025 Ludovic Courtès <ludo@gnu.org>
 # Copyright © 2013 Andreas Enge <andreas@enge.fr>
 # Copyright © 2015, 2017 Alex Kost <alezost@gmail.com>
 # Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
@@ -1321,6 +1321,13 @@ download-po:
 	rm -rf "$$dir"
 .PHONY: download-po
 
+# Regenerate 'CODEOWNERS' when 'teams.scm' is modified so we don't forget.
+CODEOWNERS: etc/teams.scm
+	./etc/teams.scm codeowners > "$@.tmp"
+	mv "$@.tmp" "$@"
+
+BUILT_SOURCES += CODEOWNERS
+
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 ## Silent rules.  ##
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