diff --git a/octoprint_bambu_printer/printer/ftpsclient/ftpsclient.py b/octoprint_bambu_printer/printer/ftpsclient/ftpsclient.py
index ca67a40..7cd4cfb 100644
--- a/octoprint_bambu_printer/printer/ftpsclient/ftpsclient.py
+++ b/octoprint_bambu_printer/printer/ftpsclient/ftpsclient.py
@@ -24,6 +24,7 @@ SOFTWARE.
 wrapper for FTPS server interactions
 """
 
+from __future__ import annotations
 import ftplib
 import os
 from pathlib import Path