diff --git a/pandas-stubs/core/indexes/base.pyi b/pandas-stubs/core/indexes/base.pyi
index d98bb6e15..ba3e6812c 100644
--- a/pandas-stubs/core/indexes/base.pyi
+++ b/pandas-stubs/core/indexes/base.pyi
@@ -324,7 +324,9 @@ class Index(IndexOpsMixin[S1]):
         self, name: bool = ..., formatter: Callable | None = ..., na_rep: _str = ...
     ) -> list[_str]: ...
     def to_flat_index(self): ...
-    def to_series(self, index=..., name: Hashable = ...) -> Series: ...
+    def to_series(
+        self, index: Index | None = None, name: Hashable | None = None
+    ) -> Series: ...
     def to_frame(self, index: bool = True, name=...) -> DataFrame: ...
     @property
     def name(self) -> Hashable | None: ...
diff --git a/pandas-stubs/core/indexes/datetimes.pyi b/pandas-stubs/core/indexes/datetimes.pyi
index 42b2f2d4d..fb90771f7 100644
--- a/pandas-stubs/core/indexes/datetimes.pyi
+++ b/pandas-stubs/core/indexes/datetimes.pyi
@@ -82,7 +82,9 @@ class DatetimeIndex(
         self, other: datetime | np.datetime64 | np_ndarray_dt | DatetimeIndex
     ) -> TimedeltaIndex: ...
     @final
-    def to_series(self, index=..., name: Hashable = ...) -> Series[Timestamp]: ...
+    def to_series(
+        self, index: Index | None = None, name: Hashable | None = None
+    ) -> Series[Timestamp]: ...
     def snap(self, freq: str = ...): ...
     def slice_indexer(self, start=..., end=..., step=...): ...
     def searchsorted(self, value, side: str = ..., sorter=...): ...
diff --git a/pandas-stubs/core/indexes/timedeltas.pyi b/pandas-stubs/core/indexes/timedeltas.pyi
index 89866d48f..179cb6735 100644
--- a/pandas-stubs/core/indexes/timedeltas.pyi
+++ b/pandas-stubs/core/indexes/timedeltas.pyi
@@ -85,7 +85,9 @@ class TimedeltaIndex(
     @property
     def inferred_type(self) -> str: ...
     @final
-    def to_series(self, index=..., name: Hashable = ...) -> Series[Timedelta]: ...
+    def to_series(
+        self, index: Index | None = None, name: Hashable | None = None
+    ) -> Series[Timedelta]: ...
     def shift(self, periods: int = 1, freq=...) -> Self: ...
 
 @overload