diff --git a/api/onnx_web/params.py b/api/onnx_web/params.py
index 38fe535a..091449b1 100644
--- a/api/onnx_web/params.py
+++ b/api/onnx_web/params.py
@@ -646,11 +646,11 @@ class ExperimentalParams:
 class RequestParams:
     device: DeviceParams
     image: ImageParams
-    size: Size | None
-    border: Border | None
-    upscale: UpscaleParams | None
-    highres: HighresParams | None
-    experimental: ExperimentalParams | None
+    size: Optional[Size]
+    border: Optional[Border]
+    upscale: Optional[UpscaleParams]
+    highres: Optional[HighresParams]
+    experimental: Optional[ExperimentalParams]
 
     def __init__(
         self,
diff --git a/api/onnx_web/server/params.py b/api/onnx_web/server/params.py
index 2e0cc16e..f623389d 100644
--- a/api/onnx_web/server/params.py
+++ b/api/onnx_web/server/params.py
@@ -472,7 +472,7 @@ def pipeline_from_json(
     return (device, params, size)
 
 
-def get_request_data(key: str | None = None) -> Any:
+def get_request_data(key: Optional[str] = None) -> Any:
     if is_json_request():
         json = request.json
     elif is_json_form_request():