diff --git a/go.mod b/go.mod
index 77d59a9a..e4ab66ee 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module github.com/metacubex/mihomo
 go 1.20
 
 require (
+	filippo.io/edwards25519 v1.1.0
 	github.com/bahlo/generic-list-go v0.2.0
 	github.com/coreos/go-iptables v0.8.0
 	github.com/dlclark/regexp2 v1.11.5
@@ -64,8 +65,6 @@ require (
 	gopkg.in/yaml.v3 v3.0.1
 )
 
-require filippo.io/edwards25519 v1.1.0
-
 require (
 	github.com/RyuaNerin/go-krypto v1.3.0 // indirect
 	github.com/Yawning/aez v0.0.0-20211027044916-e49e68abd344 // indirect
diff --git a/transport/sudoku/obfs/httpmask/tunnel.go b/transport/sudoku/obfs/httpmask/tunnel.go
index 3e0b6aa1..65449408 100644
--- a/transport/sudoku/obfs/httpmask/tunnel.go
+++ b/transport/sudoku/obfs/httpmask/tunnel.go
@@ -5,21 +5,22 @@ import (
 	"bytes"
 	"context"
 	crand "crypto/rand"
-	"crypto/tls"
 	"encoding/base64"
 	"errors"
 	"fmt"
 	"io"
 	mrand "math/rand"
 	"net"
-	"net/http"
-	"net/http/httputil"
 	"net/url"
 	"os"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/metacubex/http"
+	"github.com/metacubex/http/httputil"
+	"github.com/metacubex/tls"
 )
 
 type TunnelMode string