diff --git a/README.md b/README.md
index a141422..c18dcce 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
  
 #### Go zero api server
  
-```shell
+
 ```go
 
 import "github.com/SpectatorNan/go-zero-i18n/goi18nx"
diff --git a/goi18nx/cache.go b/goi18nx/cache.go
index a94d6d2..2ddacb6 100644
--- a/goi18nx/cache.go
+++ b/goi18nx/cache.go
@@ -27,8 +27,7 @@ func withRequest(r *http.Request, bundle *i18n2.Bundle) *http.Request {
 	accept := r.Header.Get(defaultLangHeaderKey)
 	localizer := i18n2.NewLocalizer(bundle, accept)
 	ctx := setLocalizer(r.Context(), localizer)
-	md := metadata.New(map[string]string{defaultLangHeaderKey: accept})
-	ctx = metadata.NewOutgoingContext(ctx, md)
+	ctx = metadata.AppendToOutgoingContext(ctx, defaultLangHeaderKey, accept)
 	return r.WithContext(ctx)
 }