diff --git a/example/main.go b/example/main.go
index 11d7c97..beb1b3c 100644
--- a/example/main.go
+++ b/example/main.go
@@ -6,21 +6,17 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/go-chi/chi"
-
-	"github.com/766b/chi-prometheus"
-	"github.com/prometheus/client_golang/prometheus"
+	chiprometheus "github.com/766b/chi-prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func main() {
 	n := chi.NewRouter()
 	m := chiprometheus.NewMiddleware("serviceName")
-	// if you want to use other buckets than the default (300, 1200, 5000) you can run:
-	// m := negroniprometheus.NewMiddleware("serviceName", 400, 1600, 700)
 
 	n.Use(m)
 
-	n.Handle("/metrics", prometheus.Handler())
+	n.Handle("/metrics", promhttp.Handler())
 	n.Get("/ok", func(w http.ResponseWriter, r *http.Request) {
 		sleep := rand.Intn(4999) + 1
 		time.Sleep(time.Duration(sleep) * time.Millisecond)
diff --git a/middleware.go b/middleware.go
index a40159c..8f384d1 100644
--- a/middleware.go
+++ b/middleware.go
@@ -1,4 +1,3 @@
-// Port https://github.com/zbindenren/negroni-prometheus for chi router
 package chiprometheus
 
 import (
@@ -6,8 +5,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-chi/chi"
-	"github.com/go-chi/chi/middleware"
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -104,6 +103,10 @@ func (c Middleware) patternHandler(next http.Handler) http.Handler {
 		next.ServeHTTP(ww, r)
 
 		rctx := chi.RouteContext(r.Context())
+		if rctx == nil {
+			// avoid nil panic
+			return
+		}
 		routePattern := strings.Join(rctx.RoutePatterns, "")
 		routePattern = strings.Replace(routePattern, "/*/", "/", -1)
 
diff --git a/middleware_test.go b/middleware_test.go
index 3d45bde..b77f42b 100644
--- a/middleware_test.go
+++ b/middleware_test.go
@@ -7,8 +7,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/go-chi/chi"
-	"github.com/prometheus/client_golang/prometheus"
+	"github.com/go-chi/chi/v5"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func Test_Logger(t *testing.T) {
@@ -18,7 +18,7 @@ func Test_Logger(t *testing.T) {
 	m := NewMiddleware("test")
 	n.Use(m)
 
-	n.Handle("/metrics", prometheus.Handler())
+	n.Handle("/metrics", promhttp.Handler())
 	n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		fmt.Fprintln(w, "ok")
@@ -80,7 +80,7 @@ func Test_PatternLogger(t *testing.T) {
 	m := NewPatternMiddleware("patternOnlyTest")
 	n.Use(m)
 
-	n.Handle("/metrics", prometheus.Handler())
+	n.Handle("/metrics", promhttp.Handler())
 	n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		fmt.Fprintln(w, "ok")
@@ -151,7 +151,7 @@ func Test_MultipleLoggers(t *testing.T) {
 	n.Use(mid)
 	n.Use(m)
 
-	n.Handle("/metrics", prometheus.Handler())
+	n.Handle("/metrics", promhttp.Handler())
 	n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		fmt.Fprintln(w, "ok")
diff --git a/pattern_example/main.go b/pattern_example/main.go
index 1322979..7f4af39 100644
--- a/pattern_example/main.go
+++ b/pattern_example/main.go
@@ -6,9 +6,8 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/edjumacator/chi-prometheus"
-	"github.com/go-chi/chi"
-	"github.com/prometheus/client_golang/prometheus"
+	chiprometheus "github.com/766b/chi-prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func main() {
@@ -17,7 +16,7 @@ func main() {
 
 	n.Use(m)
 
-	n.Handle("/metrics", prometheus.Handler())
+	n.Handle("/metrics", promhttp.Handler())
 	n.Get("/ok", func(w http.ResponseWriter, r *http.Request) {
 		sleep := rand.Intn(4999) + 1
 		time.Sleep(time.Duration(sleep) * time.Millisecond)