diff --git a/CODEOWNERS b/CODEOWNERS
index 2081da7e60b..81cb9c6a4f5 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -26,3 +26,4 @@ CHANGELOG.md
 go.mod @grafana/mimir-maintainers @grafanabot
 go.sum @grafana/mimir-maintainers @grafanabot
 /vendor/ @grafana/mimir-maintainers @grafanabot
+/vendor/github.com/prometheus/alertmanager @grafana/mimir-ruler-and-alertmanager-maintainers @grafana/mimir-maintainers @grafanabot