diff --git a/src/singerlake/discovery/discovery_service.py b/src/singerlake/discovery/discovery_service.py
index ca065de..1c9ec63 100644
--- a/src/singerlake/discovery/discovery_service.py
+++ b/src/singerlake/discovery/discovery_service.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import typing as t
 
 from singerlake.tap import Tap