diff --git a/tenacity/__init__.py b/tenacity/__init__.py
index 802bde7..282e6da 100644
--- a/tenacity/__init__.py
+++ b/tenacity/__init__.py
@@ -609,7 +609,7 @@ def set_result(self, val: t.Any) -> None:
     def set_exception(
         self,
         exc_info: tuple[
-            type[BaseException], BaseException, "types.TracebackType| None"
+            type[BaseException], BaseException, "types.TracebackType | None"
         ],
     ) -> None:
         ts = time.monotonic()