diff --git a/src/snkit/network.py b/src/snkit/network.py
index 7154f63..bb49509 100644
--- a/src/snkit/network.py
+++ b/src/snkit/network.py
@@ -1,5 +1,7 @@
 """Network representation and utilities
 """
+from __future__ import annotations
+
 from functools import partial
 import logging
 import multiprocessing