diff --git a/Doc/library/pathlib.rst b/Doc/library/pathlib.rst
index a6daca9789a..944963e1e1a 100644
--- a/Doc/library/pathlib.rst
+++ b/Doc/library/pathlib.rst
@@ -1186,6 +1186,8 @@ call fails (for example because the path doesn't exist).
    relative to the current working directory, *not* the directory of the Path
    object.
 
+   It is implemented in terms of :func:`os.rename` and gives the same guarantees.
+
    .. versionchanged:: 3.8
       Added return value, return the new Path instance.