diff --git a/tests/examples/test_node.py b/tests/examples/test_node.py
index 09cdb6d..936c95b 100644
--- a/tests/examples/test_node.py
+++ b/tests/examples/test_node.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import textwrap
+from typing import Annotated
 from unittest.mock import MagicMock, patch
 
 import asdf
@@ -14,6 +15,8 @@
 
 from asdf_pydantic import AsdfPydanticConverter, AsdfPydanticModel
 
+SelfAnnotatedAsdfNode = Annotated[AsdfTag]
+
 
 class AsdfNode(AsdfPydanticModel):
     """Model for a node in a graph/tree.