diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index da882b108..4f8628143 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -1053,6 +1053,8 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     __hash__: None  # type: ignore
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, item: Any) -> GenericAlias: ...
+        def __or__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
+        def __ior__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
 
 class set(MutableSet[_T], Generic[_T]):
     def __init__(self, iterable: Iterable[_T] = ...) -> None: ...
diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
index da882b108..4f8628143 100644
--- a/stdlib/2and3/builtins.pyi
+++ b/stdlib/2and3/builtins.pyi
@@ -1053,6 +1053,8 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     __hash__: None  # type: ignore
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, item: Any) -> GenericAlias: ...
+        def __or__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
+        def __ior__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
 
 class set(MutableSet[_T], Generic[_T]):
     def __init__(self, iterable: Iterable[_T] = ...) -> None: ...
diff --git a/stdlib/3/collections/__init__.pyi b/stdlib/3/collections/__init__.pyi
index 2fe9ffd44..e16b0efba 100644
--- a/stdlib/3/collections/__init__.pyi
+++ b/stdlib/3/collections/__init__.pyi
@@ -270,13 +270,13 @@ class Counter(Dict[_T, int], Generic[_T]):
     def __add__(self, other: Counter[_T]) -> Counter[_T]: ...
     def __sub__(self, other: Counter[_T]) -> Counter[_T]: ...
     def __and__(self, other: Counter[_T]) -> Counter[_T]: ...
-    def __or__(self, other: Counter[_T]) -> Counter[_T]: ...
+    def __or__(self, other: Counter[_T]) -> Counter[_T]: ...  # type: ignore
     def __pos__(self) -> Counter[_T]: ...
     def __neg__(self) -> Counter[_T]: ...
     def __iadd__(self, other: Counter[_T]) -> Counter[_T]: ...
     def __isub__(self, other: Counter[_T]) -> Counter[_T]: ...
     def __iand__(self, other: Counter[_T]) -> Counter[_T]: ...
-    def __ior__(self, other: Counter[_T]) -> Counter[_T]: ...
+    def __ior__(self, other: Counter[_T]) -> Counter[_T]: ...  # type: ignore
 
 class _OrderedDictKeysView(KeysView[_KT], Reversible[_KT]):
     def __reversed__(self) -> Iterator[_KT]: ...