diff --git a/binary/jce/structs.go b/binary/jce/structs.go
index 246214fb..9583912d 100644
--- a/binary/jce/structs.go
+++ b/binary/jce/structs.go
@@ -739,6 +739,7 @@ func (pkt *TroopMemberInfo) ReadFrom(r *JceReader) {
 	pkt.Flag = r.ReadInt64(18)
 	pkt.SpecialTitle = r.ReadString(23)
 	pkt.SpecialTitleExpireTime = r.ReadInt64(24)
+	pkt.ShutUpTimestap = r.ReadInt64(30)
 }
 
 func (pkt *PushMessageInfo) ReadFrom(r *JceReader) {
diff --git a/client/client.go b/client/client.go
index 1410997b..534c2cf3 100644
--- a/client/client.go
+++ b/client/client.go
@@ -662,7 +662,7 @@ func (c *QQClient) GetGroupMembers(group *GroupInfo) ([]*GroupMemberInfo, error)
 		if data == nil {
 			return nil, errors.New("group member list unavailable: rsp is nil")
 		}
-		rsp := data.(groupMemberListResponse)
+		rsp := data.(*groupMemberListResponse)
 		nextUin = rsp.NextUin
 		for _, m := range rsp.list {
 			m.Group = group
diff --git a/client/decoders.go b/client/decoders.go
index cc36e191..5bee5cce 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -464,7 +464,7 @@ func decodeFriendGroupListResponse(_ *QQClient, _ *incomingPacketInfo, payload [
 	data.ReadFrom(jce.NewJceReader(request.SBuffer))
 	r := jce.NewJceReader(data.Map["FLRESP"][1:])
 	totalFriendCount := r.ReadInt16(5)
-	friends := []jce.FriendInfo{}
+	friends := make([]jce.FriendInfo, 0)
 	r.ReadSlice(&friends, 7)
 	l := make([]*FriendInfo, 0, len(friends))
 	for _, f := range friends {
@@ -536,7 +536,7 @@ func decodeGroupMemberListResponse(_ *QQClient, _ *incomingPacketInfo, payload [
 	data := &jce.RequestDataVersion3{}
 	data.ReadFrom(jce.NewJceReader(request.SBuffer))
 	r := jce.NewJceReader(data.Map["GTMLRESP"][1:])
-	members := []jce.TroopMemberInfo{}
+	members := make([]jce.TroopMemberInfo, 0)
 	r.ReadSlice(&members, 3)
 	next := r.ReadInt64(4)
 	l := make([]*GroupMemberInfo, 0, len(members))
@@ -551,6 +551,7 @@ func decodeGroupMemberListResponse(_ *QQClient, _ *incomingPacketInfo, payload [
 			LastSpeakTime:          m.LastSpeakTime,
 			SpecialTitle:           m.SpecialTitle,
 			SpecialTitleExpireTime: m.SpecialTitleExpireTime,
+			ShutUpTimestamp:        m.ShutUpTimestap,
 			Permission: func() MemberPermission {
 				if m.Flag == 1 {
 					return Administrator
@@ -559,7 +560,7 @@ func decodeGroupMemberListResponse(_ *QQClient, _ *incomingPacketInfo, payload [
 			}(),
 		})
 	}
-	return groupMemberListResponse{
+	return &groupMemberListResponse{
 		NextUin: next,
 		list:    l,
 	}, nil
diff --git a/client/group_info.go b/client/group_info.go
index 2d9c10a8..5a233a62 100644
--- a/client/group_info.go
+++ b/client/group_info.go
@@ -50,6 +50,7 @@ type (
 		LastSpeakTime          int64
 		SpecialTitle           string
 		SpecialTitleExpireTime int64
+		ShutUpTimestamp        int64
 		Permission             MemberPermission
 	}