diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index 04570eef6..6e3086e4c 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -476,6 +476,7 @@ class slice(object):
     def __init__(self, stop: Optional[int]) -> None: ...
     @overload
     def __init__(self, start: Optional[int], stop: Optional[int], step: int = None) -> None: ...
+    def indices(self, len: int) -> Tuple[int, int, int]: ...
 
 class tuple(Sequence[_T_co], Generic[_T_co]):
     def __init__(self, iterable: Iterable[_T_co] = ...) -> None: ...
diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index 178d6bfa6..835119a81 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -525,6 +525,7 @@ class slice:
     def __init__(self, stop: Optional[int]) -> None: ...
     @overload
     def __init__(self, start: Optional[int], stop: Optional[int], step: int = None) -> None: ...
+    def indices(self, len: int) -> Tuple[int, int, int]: ...
 
 class tuple(Sequence[_T_co], Generic[_T_co]):
     def __init__(self, iterable: Iterable[_T_co] = ...) -> None: ...