diff --git a/router.go b/router.go
index 1a3fb08..7942ddb 100644
--- a/router.go
+++ b/router.go
@@ -46,10 +46,12 @@ func NewRouter(r *router.Router, logger log.Logger, endpointOverride ...Endpoint
 	}
 }
 
-func (ro *Router) RegisterCallbackServer(srv server.CallbackServer) {
+func (ro *Router) RegisterCallbackServer(srv server.CallbackServer) *Router {
 	ro.Register(ro.CallbackEndpoint, router.NewServer(srv.Callback).SetLogger(ro.Logger))
+	return ro
 }
 
-func (ro *Router) RegisterTokenServer(srv server.TokenServer) {
+func (ro *Router) RegisterTokenServer(srv server.TokenServer) *Router {
 	ro.Register(ro.TokenEndpoint, router.NewServer(srv.Token).SetLogger(ro.Logger))
+	return ro
 }