diff --git a/cmd/Open-IM-SDK-Core b/cmd/Open-IM-SDK-Core
index a6b33ab9d..754a21f0b 160000
--- a/cmd/Open-IM-SDK-Core
+++ b/cmd/Open-IM-SDK-Core
@@ -1 +1 @@
-Subproject commit a6b33ab9d277ef82e1e0e12c4affb49b53758735
+Subproject commit 754a21f0b1a86292127dd77999cfb42f18a713af
diff --git a/internal/rpc/group/group.go b/internal/rpc/group/group.go
index a279603ad..d62e24366 100644
--- a/internal/rpc/group/group.go
+++ b/internal/rpc/group/group.go
@@ -974,7 +974,8 @@ func (s *groupServer) MuteGroupMember(ctx context.Context, req *pbGroup.MuteGrou
 		return &pbGroup.MuteGroupMemberResp{CommonResp: &pbGroup.CommonResp{ErrCode: constant.ErrAccess.ErrCode, ErrMsg: constant.ErrAccess.ErrMsg}}, nil
 	}
 	groupMemberInfo := db.GroupMember{GroupID: req.GroupID, UserID: req.UserID}
-	groupMemberInfo.MuteEndTime = time.Unix(int64(time.Now().Second())+int64(req.MutedSeconds), 0)
+
+	groupMemberInfo.MuteEndTime = time.Unix(int64(time.Now().Second())+int64(req.MutedSeconds), time.Now().UnixNano())
 	err := imdb.UpdateGroupMemberInfo(groupMemberInfo)
 	if err != nil {
 		log.Error(req.OperationID, "UpdateGroupMemberInfo failed ", err.Error(), groupMemberInfo)