diff --git a/sdks/python/pmxt/errors.py b/sdks/python/pmxt/errors.py
index e41ab1e1..b414edea 100644
--- a/sdks/python/pmxt/errors.py
+++ b/sdks/python/pmxt/errors.py
@@ -5,6 +5,8 @@
 enabling users to catch specific error types.
 """
 
+from __future__ import annotations
+
 
 class PmxtError(Exception):
     """Base error class for all pmxt errors."""