diff --git a/resources/lib/modules/system.py b/resources/lib/modules/system.py
index 4a64a579..52463966 100644
--- a/resources/lib/modules/system.py
+++ b/resources/lib/modules/system.py
@@ -564,9 +564,9 @@ def do_backup(self, listItem=None):
                 self.backup_dlg.create('LibreELEC', oe._(32375))
                 if not os.path.exists(self.BACKUP_DESTINATION):
                     os.makedirs(self.BACKUP_DESTINATION)
-                self.backup_file = f'{hostname.get_hostname()}-{oe.timestamp()}.tar'
+                self.backup_file = f'{hostname.get_hostname()}-{oe.timestamp()}.tar.zst'
                 log.log(f'Backup file: {bckDir + self.backup_file}', log.INFO)
-                tar = tarfile.open(bckDir + self.backup_file, 'w', format=tarfile.GNU_FORMAT)
+                tar = tarfile.open(bckDir + self.backup_file, mode='w:zst', level=3, format=tarfile.GNU_FORMAT)
                 for directory in self.BACKUP_DIRS:
                     self.tar_add_folder(tar, directory)
                     if self.backup_dlg is None or self.backup_dlg.iscanceled():