diff --git a/stdlib/3/pathlib.pyi b/stdlib/3/pathlib.pyi
index 9ca20cd36..ff6bedd1c 100644
--- a/stdlib/3/pathlib.pyi
+++ b/stdlib/3/pathlib.pyi
@@ -32,8 +32,10 @@ class PurePath(_PurePathBase):
     def __ge__(self, other: PurePath) -> bool: ...
     if sys.version_info < (3, 6):
         def __truediv__(self: _P, key: Union[str, PurePath]) -> _P: ...
+        def __rtruediv__(self: _P, key: Union[str, PurePath]) -> _P: ...
     else:
         def __truediv__(self: _P, key: Union[str, os.PathLike[str]]) -> _P: ...
+        def __rtruediv__(self: _P, key: Union[str, os.PathLike[str]]) -> _P: ...
     if sys.version_info < (3,):
         def __div__(self: _P, key: Union[str, PurePath]) -> _P: ...
     def __bytes__(self) -> bytes: ...
diff --git a/third_party/2/pathlib2.pyi b/third_party/2/pathlib2.pyi
index 9ca20cd36..ff6bedd1c 100644
--- a/third_party/2/pathlib2.pyi
+++ b/third_party/2/pathlib2.pyi
@@ -32,8 +32,10 @@ class PurePath(_PurePathBase):
     def __ge__(self, other: PurePath) -> bool: ...
     if sys.version_info < (3, 6):
         def __truediv__(self: _P, key: Union[str, PurePath]) -> _P: ...
+        def __rtruediv__(self: _P, key: Union[str, PurePath]) -> _P: ...
     else:
         def __truediv__(self: _P, key: Union[str, os.PathLike[str]]) -> _P: ...
+        def __rtruediv__(self: _P, key: Union[str, os.PathLike[str]]) -> _P: ...
     if sys.version_info < (3,):
         def __div__(self: _P, key: Union[str, PurePath]) -> _P: ...
     def __bytes__(self) -> bytes: ...