diff --git a/util/http.go b/util/http.go
index f074769..26e4a7b 100644
--- a/util/http.go
+++ b/util/http.go
@@ -7,14 +7,13 @@ import (
 	"encoding/json"
 	"encoding/pem"
 	"encoding/xml"
+	"fmt"
 	"io"
 	"log"
 	"mime/multipart"
 	"net/http"
 	"os"
 
-	"fmt"
-
 	"golang.org/x/crypto/pkcs12"
 )
 
diff --git a/wechat.go b/wechat.go
index 3e3b825..dc2585f 100644
--- a/wechat.go
+++ b/wechat.go
@@ -4,8 +4,6 @@ import (
 	"net/http"
 	"os"
 
-	"github.com/silenceper/wechat/v2/util"
-
 	log "github.com/sirupsen/logrus"
 
 	"github.com/silenceper/wechat/v2/cache"
@@ -17,6 +15,7 @@ import (
 	openConfig "github.com/silenceper/wechat/v2/openplatform/config"
 	"github.com/silenceper/wechat/v2/pay"
 	payConfig "github.com/silenceper/wechat/v2/pay/config"
+	"github.com/silenceper/wechat/v2/util"
 	"github.com/silenceper/wechat/v2/work"
 	workConfig "github.com/silenceper/wechat/v2/work/config"
 )