update

integration_tests/base_routes.py

@@ -1,4 +1,5 @@
 import os
+import sys
 import pathlib
 from collections import defaultdict
 from typing import Optional, List
@@ -559,9 +560,16 @@ async def async_dict_post():
 
 # Body
 
+if sys.version_info >= (3, 9):
+    # Python 3.9+ syntax
+    from typing import list as ListType
+else:
+    # Python 3.8 compatible syntax
+    ListType = List
+
 class TestMyRequest(Body):
     items: List[str]
-    numbers: list[int]
+    numbers: ListType[int]
 
 
 @app.post("/sync/body")