diff --git a/examples/http-add-header/main.go b/examples/http-add-header/main.go
new file mode 100644
index 0000000..79f8b26
--- /dev/null
+++ b/examples/http-add-header/main.go
@@ -0,0 +1,37 @@
+package main
+
+import (
+	"strconv"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/lqqyt2423/go-mitmproxy/addon"
+	"github.com/lqqyt2423/go-mitmproxy/flow"
+	"github.com/lqqyt2423/go-mitmproxy/proxy"
+)
+
+type AddHeader struct {
+	addon.Base
+	count int
+}
+
+func (a *AddHeader) Responseheaders(f *flow.Flow) {
+	a.count += 1
+	f.Response.Header.Add("x-count", strconv.Itoa(a.count))
+}
+
+func main() {
+	opts := &proxy.Options{
+		Addr:              ":9080",
+		StreamLargeBodies: 1024 * 1024 * 5,
+	}
+
+	p, err := proxy.NewProxy(opts)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	p.AddAddon(&AddHeader{})
+
+	log.Fatal(p.Start())
+}