diff --git a/archlinux/PKGBUILD b/archlinux/PKGBUILD
index cdaab7c..784a015 100644
--- a/archlinux/PKGBUILD
+++ b/archlinux/PKGBUILD
@@ -1,4 +1,6 @@
 # Maintainer: Daniel Langbein <daniel@systemli.org>
+# Python package guidelines: https://wiki.archlinux.org/title/Python_package_guidelines#Standards_based_(PEP_517)
+
 pkgname="py-regex-replace"
 pkgver=0.0.1
 pkgrel=1