diff --git a/web/federate.go b/web/federate.go
index 93c9aece36..19ad59cdb3 100644
--- a/web/federate.go
+++ b/web/federate.go
@@ -44,6 +44,10 @@ var (
 	})
 )
 
+func registerFederationMetrics(r prometheus.Registerer) {
+	r.MustRegister(federationWarnings, federationErrors)
+}
+
 func (h *Handler) federation(w http.ResponseWriter, req *http.Request) {
 	h.mtx.RLock()
 	defer h.mtx.RUnlock()
diff --git a/web/web.go b/web/web.go
index 21fc02158a..48fc62c8cd 100644
--- a/web/web.go
+++ b/web/web.go
@@ -139,6 +139,7 @@ func newMetrics(r prometheus.Registerer) *metrics {
 
 	if r != nil {
 		r.MustRegister(m.requestCounter, m.requestDuration, m.responseSize)
+		registerFederationMetrics(r)
 	}
 	return m
 }