diff --git a/docs/en/docs/tutorial/body.md b/docs/en/docs/tutorial/body.md
index f9af42938..587d48731 100644
--- a/docs/en/docs/tutorial/body.md
+++ b/docs/en/docs/tutorial/body.md
@@ -206,7 +206,7 @@ The function parameters will be recognized as follows:
 !!! note
     FastAPI will know that the value of `q` is not required because of the default value `= None`.
 
-    The `Union` in `Union[str, None]` is not used by FastAPI, but will allow your editor to give you better support and detect errors.
+    The `Union` in `Union[str, None]` (Python 3.8+), or `str | None` (Python 3.10+), is not used by FastAPI, but will allow your editor to give you better support and detect errors.
 
 ## Without Pydantic