diff --git a/fastapi/_compat/main.py b/fastapi/_compat/main.py
index 859126344..763658e32 100644
--- a/fastapi/_compat/main.py
+++ b/fastapi/_compat/main.py
@@ -39,7 +39,7 @@ else:
     from .v1 import RequiredParam as RequiredParam
     from .v1 import Undefined as Undefined
     from .v1 import UndefinedType as UndefinedType
-    from .v1 import Url as Url  # type: ignore[attr-defined, no-redef]
+    from .v1 import Url as Url  # type: ignore[assignment]
     from .v1 import Validator as Validator
     from .v1 import evaluate_forwardref as evaluate_forwardref
     from .v1 import get_missing_field_error as get_missing_field_error
diff --git a/fastapi/encoders.py b/fastapi/encoders.py
index 29acd7621..8ff7d58dd 100644
--- a/fastapi/encoders.py
+++ b/fastapi/encoders.py
@@ -86,7 +86,7 @@ ENCODERS_BY_TYPE: Dict[Type[Any], Callable[[Any], Any]] = {
     set: list,
     UUID: str,
     Url: str,
-    v1.Url: str,  # type: ignore[attr-defined]
+    v1.Url: str,
     AnyUrl: str,
     v1.AnyUrl: str,
 }