diff --git a/stdlib/builtins.pyi b/stdlib/builtins.pyi
index 4ca869ff8..279a6295c 100644
--- a/stdlib/builtins.pyi
+++ b/stdlib/builtins.pyi
@@ -827,6 +827,7 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, item: Any) -> GenericAlias: ...
         def __or__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
+        def __ror__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
         def __ior__(self, __value: Mapping[_KT, _VT]) -> Dict[_KT, _VT]: ...
 
 class set(MutableSet[_T], Generic[_T]):