diff --git a/ops/docker-compose/matomo/README.md b/ops/docker-compose/matomo/README.md
index d4d33f82768c265b33d9a582d8ebea4c2793d837..d05a949216ea12f5415d940924d57cead0ce886d 100644
--- a/ops/docker-compose/matomo/README.md
+++ b/ops/docker-compose/matomo/README.md
@@ -3,4 +3,7 @@ database. This is currently not used by the official nomad production deployment
 
 The example proxy rules use a path that does not hint at matomo/piwik and that rewrite
 key files (piwik.js, piwik.php) that cause many tracking events beeing blocked by
-ad-blocker or similar browser plug-ins.
\ No newline at end of file
+ad-blocker or similar browser plug-ins.
+
+We use a mount to add a IP database to matomo. The IP db is downloaded from:
+https://download.db-ip.com/free/dbip-city-lite-2020-07.mmdb.gz