diff --git a/stdlib/_operator.pyi b/stdlib/_operator.pyi
index acc4a6fb5..9b24e086a 100644
--- a/stdlib/_operator.pyi
+++ b/stdlib/_operator.pyi
@@ -95,16 +95,16 @@ def length_hint(__obj: object, __default: int = 0) -> int: ...
 @final
 class attrgetter(Generic[_T_co]):
     @overload
-    def __new__(cls, attr: str) -> attrgetter[Any]: ...
+    def __new__(cls, attr: str, /) -> attrgetter[Any]: ...
     @overload
-    def __new__(cls, attr: str, __attr2: str) -> attrgetter[tuple[Any, Any]]: ...
+    def __new__(cls, attr: str, attr2: str, /) -> attrgetter[tuple[Any, Any]]: ...
     @overload
-    def __new__(cls, attr: str, __attr2: str, __attr3: str) -> attrgetter[tuple[Any, Any, Any]]: ...
+    def __new__(cls, attr: str, attr2: str, attr3: str, /) -> attrgetter[tuple[Any, Any, Any]]: ...
     @overload
-    def __new__(cls, attr: str, __attr2: str, __attr3: str, __attr4: str) -> attrgetter[tuple[Any, Any, Any, Any]]: ...
+    def __new__(cls, attr: str, attr2: str, attr3: str, attr4: str, /) -> attrgetter[tuple[Any, Any, Any, Any]]: ...
     @overload
-    def __new__(cls, attr: str, *attrs: str) -> attrgetter[tuple[Any, ...]]: ...
-    def __call__(self, obj: Any) -> _T_co: ...
+    def __new__(cls, attr: str, /, *attrs: str) -> attrgetter[tuple[Any, ...]]: ...
+    def __call__(self, obj: Any, /) -> _T_co: ...
 
 @final
 class itemgetter(Generic[_T_co]):