diff --git a/backend_client.go b/backend_client.go
index b1e1e9d..41565a1 100644
--- a/backend_client.go
+++ b/backend_client.go
@@ -56,6 +56,7 @@ const (
 )
 
 type BackendClient struct {
+	hub       *Hub
 	transport *http.Transport
 	version   string
 	backends  *BackendConfiguration
@@ -342,6 +343,9 @@ func (b *BackendClient) PerformJSONRequest(ctx context.Context, u *url.URL, requ
 	req.Header.Set("Accept", "application/json")
 	req.Header.Set("OCS-APIRequest", "true")
 	req.Header.Set("User-Agent", "nextcloud-spreed-signaling/"+b.version)
+	if b.hub != nil {
+		req.Header.Set("X-Spreed-Signaling-Features", strings.Join(b.hub.info.Features, ", "))
+	}
 
 	// Add checksum so the backend can validate the request.
 	AddBackendChecksum(req, data, secret)
diff --git a/hub.go b/hub.go
index 0d3afff..e2965a0 100644
--- a/hub.go
+++ b/hub.go
@@ -333,6 +333,7 @@ func NewHub(config *goconf.ConfigFile, nats NatsClient, r *mux.Router, version s
 		geoip:          geoip,
 		geoipOverrides: geoipOverrides,
 	}
+	backend.hub = hub
 	hub.upgrader.CheckOrigin = hub.checkOrigin
 	r.HandleFunc("/spreed", func(w http.ResponseWriter, r *http.Request) {
 		hub.serveWs(w, r)