diff --git a/cmd/hwtd/main.go b/cmd/hwtd/main.go
index 45ac0e5..7dc1da3 100644
--- a/cmd/hwtd/main.go
+++ b/cmd/hwtd/main.go
@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"os"
 
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"mcquay.me/hwt"
 	pb "mcquay.me/hwt/rpc/hwt"
 )
@@ -16,7 +17,10 @@ func main() {
 	}
 	s := &hwt.Server{hn}
 	th := pb.NewHelloWorldServer(s, nil)
-	if err := http.ListenAndServe(":8080", th); err != nil {
+	sm := http.NewServeMux()
+	sm.Handle("/", th)
+	sm.Handle("/metrics", promhttp.Handler())
+	if err := http.ListenAndServe(":8080", sm); err != nil {
 		log.Fatalf("listen and serve: %v", err)
 	}
 }