diff --git a/client/image.go b/client/image.go
index e3736b9f..3e3ebb69 100644
--- a/client/image.go
+++ b/client/image.go
@@ -3,13 +3,13 @@ package client
 import (
 	"bytes"
 	"encoding/hex"
-	"image"
 	"io"
 	"math/rand"
 	"os"
 	"strings"
 	"time"
 
+	"github.com/fumiama/imgsz"
 	"github.com/pkg/errors"
 
 	"github.com/Mrs4s/MiraiGo/binary"
@@ -82,7 +82,7 @@ func (c *QQClient) UploadGroupImage(groupCode int64, img io.ReadSeeker) (*messag
 	return nil, errors.Wrap(err, "upload failed")
 ok:
 	_, _ = img.Seek(0, io.SeekStart)
-	i, _, _ := image.DecodeConfig(img)
+	i, _, _ := imgsz.DecodeSize(img)
 	var imageType int32 = 1000
 	_, _ = img.Seek(0, io.SeekStart)
 	tmp := make([]byte, 4)
@@ -135,7 +135,7 @@ func (c *QQClient) UploadGroupImageByFile(groupCode int64, path string) (*messag
 	return nil, errors.Wrap(err, "upload failed")
 ok:
 	_, _ = img.Seek(0, io.SeekStart)
-	i, _, _ := image.DecodeConfig(img)
+	i, _, _ := imgsz.DecodeSize(img)
 	var imageType int32 = 1000
 	_, _ = img.Seek(0, io.SeekStart)
 	tmp := make([]byte, 4)
diff --git a/go.mod b/go.mod
index c676ed7f..83b7f008 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.17
 
 require (
 	github.com/RomiChan/protobuf v0.0.0-20211223055824-048df49a8956
+	github.com/fumiama/imgsz v0.0.2
 	github.com/klauspost/compress v1.13.6
 	github.com/pierrec/lz4/v4 v4.1.11
 	github.com/pkg/errors v0.9.1
diff --git a/go.sum b/go.sum
index 78856e76..5c9e6c29 100644
--- a/go.sum
+++ b/go.sum
@@ -3,6 +3,8 @@ github.com/RomiChan/protobuf v0.0.0-20211223055824-048df49a8956/go.mod h1:CKKOWC
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fumiama/imgsz v0.0.2 h1:fAkC0FnIscdKOXwAxlyw3EUba5NzxZdSxGaq3Uyfxak=
+github.com/fumiama/imgsz v0.0.2/go.mod h1:dR71mI3I2O5u6+PCpd47M9TZptzP+39tRBcbdIkoqM4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
diff --git a/internal/tlv/t545.go b/internal/tlv/t545.go
index 756da96f..a916a047 100644
--- a/internal/tlv/t545.go
+++ b/internal/tlv/t545.go
@@ -4,7 +4,7 @@ import "github.com/Mrs4s/MiraiGo/binary"
 
 func T545(imei []byte) []byte {
 	return binary.NewWriterF(func(w *binary.Writer) {
-		w.WriteUInt16(0x108)
+		w.WriteUInt16(0x545)
 		w.WriteBytesShort(imei)
 	})
 }