diff --git a/src/fediblockhole/__init__.py b/src/fediblockhole/__init__.py
index 8a0823c..67c80ea 100755
--- a/src/fediblockhole/__init__.py
+++ b/src/fediblockhole/__init__.py
@@ -1,6 +1,6 @@
 """A tool for managing federated Mastodon blocklists
 """
-
+from __future__ import annotations
 import argparse
 import toml
 import csv
diff --git a/src/fediblockhole/blocklists.py b/src/fediblockhole/blocklists.py
index 1edf886..72cb804 100644
--- a/src/fediblockhole/blocklists.py
+++ b/src/fediblockhole/blocklists.py
@@ -1,5 +1,6 @@
 """Parse various blocklist data formats
 """
+from __future__ import annotations
 import csv
 import json
 from typing import Iterable
diff --git a/src/fediblockhole/const.py b/src/fediblockhole/const.py
index 93cf2ef..ea35cb1 100644
--- a/src/fediblockhole/const.py
+++ b/src/fediblockhole/const.py
@@ -1,5 +1,6 @@
 """ Constant objects used by FediBlockHole
 """
+from __future__ import annotations
 import enum
 from typing import NamedTuple, Optional, TypedDict
 from dataclasses import dataclass