diff --git a/pandas-stubs/core/frame.pyi b/pandas-stubs/core/frame.pyi
index 15edfa047..b9a479c0d 100644
--- a/pandas-stubs/core/frame.pyi
+++ b/pandas-stubs/core/frame.pyi
@@ -730,24 +730,9 @@ class DataFrame(NDFrame, OpsMixin):
         | list[HashableT],
         drop: _bool = ...,
         append: _bool = ...,
-        *,
         verify_integrity: _bool = ...,
     ) -> DataFrame: ...
     @overload
-    def set_index(
-        self,
-        keys: Label
-        | Series
-        | Index
-        | np.ndarray
-        | Iterator[HashableT]
-        | list[HashableT],
-        drop: _bool = ...,
-        append: _bool = ...,
-        inplace: _bool | None = ...,
-        verify_integrity: _bool = ...,
-    ) -> DataFrame | None: ...
-    @overload
     def reset_index(
         self,
         level: Level | Sequence[Level] = ...,
diff --git a/pandas-stubs/io/stata.pyi b/pandas-stubs/io/stata.pyi
index fb3c7bd48..d2ff3f130 100644
--- a/pandas-stubs/io/stata.pyi
+++ b/pandas-stubs/io/stata.pyi
@@ -25,7 +25,7 @@ from pandas._typing import (
 
 @overload
 def read_stata(
-    path: FilePath | ReadBuffer[bytes],
+    filepath_or_buffer: FilePath | ReadBuffer[bytes],
     *,
     convert_dates: bool = ...,
     convert_categoricals: bool = ...,
@@ -41,15 +41,15 @@ def read_stata(
 ) -> StataReader: ...
 @overload
 def read_stata(
-    path: FilePath | ReadBuffer[bytes],
+    filepath_or_buffer: FilePath | ReadBuffer[bytes],
     *,
-    convert_dates: bool,
-    convert_categoricals: bool,
-    index_col: str | None,
-    convert_missing: bool,
-    preserve_dtypes: bool,
-    columns: list[HashableT] | None,
-    order_categoricals: bool,
+    convert_dates: bool = ...,
+    convert_categoricals: bool = ...,
+    index_col: str | None = ...,
+    convert_missing: bool = ...,
+    preserve_dtypes: bool = ...,
+    columns: list[HashableT] | None = ...,
+    order_categoricals: bool = ...,
     chunksize: int,
     iterator: bool = ...,
     compression: CompressionOptions = ...,
@@ -57,7 +57,7 @@ def read_stata(
 ) -> StataReader: ...
 @overload
 def read_stata(
-    path: FilePath | ReadBuffer[bytes],
+    filepath_or_buffer: FilePath | ReadBuffer[bytes],
     *,
     convert_dates: bool = ...,
     convert_categoricals: bool = ...,
diff --git a/tests/test_io.py b/tests/test_io.py
index fd37831ee..bf9484e07 100644
--- a/tests/test_io.py
+++ b/tests/test_io.py
@@ -196,6 +196,8 @@ def test_read_stata_iterator():
         check(
             assert_type(read_stata(str_path, iterator=True), StataReader), StataReader
         )
+        reader = read_stata(str_path, chunksize=1)
+        check(assert_type(reader, StataReader), StataReader)
 
 
 def test_clipboard():
diff --git a/tests/test_series.py b/tests/test_series.py
index 2dcd786c4..d1ceca79e 100644
--- a/tests/test_series.py
+++ b/tests/test_series.py
@@ -266,6 +266,8 @@ def test_types_rank() -> None:
         s.rank(method="dense", ascending=True)
     with pytest.warns(FutureWarning, match="Calling Series.rank with numeric_only"):
         s.rank(method="first", numeric_only=True)
+    s2 = pd.Series([1, 1, 2, 5, 6, np.nan])
+    s2.rank(method="first", numeric_only=True)
 
 
 def test_types_mean() -> None: