diff --git a/tests_typing/test_http_request.mypy-testing b/tests_typing/test_http_request.mypy-testing
index a306b15fe..636e6895f 100644
--- a/tests_typing/test_http_request.mypy-testing
+++ b/tests_typing/test_http_request.mypy-testing
@@ -14,7 +14,7 @@ class MyRequest2(Request):
 
 @pytest.mark.mypy_testing
 def mypy_test_headers():
-    Request("data:,", headers=1)  # E: Argument "headers" to "Request" has incompatible type "int"; expected "Mapping[str, Any] | Iterable[tuple[str, Any]] | None"
+    Request("data:,", headers=1)  # E: Argument "headers" to "Request" has incompatible type "int"; expected "Union[Mapping[str, Any], Iterable[Tuple[str, Any]], None]"
     Request("data:,", headers=None)
     Request("data:,", headers={})
     Request("data:,", headers=[])