diff --git a/src/requests/_types.py b/src/requests/_types.py
index b2273d612b..e3369f734f 100644
--- a/src/requests/_types.py
+++ b/src/requests/_types.py
@@ -144,7 +144,7 @@ class _ValidatedRequest(PreparedRequest):
         | float
         | str
         | Sequence["JsonType"]
-        | Mapping[str, "JsonType"]
+        | Mapping[str, Any]
     )
 
     # TypedDicts for Unpack kwargs (PEP 692)