diff --git a/niworkflows/data/__init__.py b/niworkflows/data/__init__.py
index 499bc1b67a0..122f267aa5d 100644
--- a/niworkflows/data/__init__.py
+++ b/niworkflows/data/__init__.py
@@ -10,6 +10,8 @@
 
 .. autoclass:: Loader
 """
+from __future__ import annotation
+
 import atexit
 import os
 from contextlib import AbstractContextManager, ExitStack