diff --git a/setup.cfg b/setup.cfg
index 84682a9..1fab6dc 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,6 +32,7 @@ classifiers =
 keywords = Django
 project_urls =
     Changelog = https://github.com/adamchainz/django-watchfiles/blob/main/CHANGELOG.rst
+    Funding = https://adamj.eu/books/
     Mastodon = https://fosstodon.org/@adamchainz
     Twitter = https://twitter.com/adamchainz