diff --git a/xarray/core/indexes.py b/xarray/core/indexes.py
index d06951bd527..46276029ddc 100644
--- a/xarray/core/indexes.py
+++ b/xarray/core/indexes.py
@@ -83,6 +83,10 @@ def from_variables(
         variables : dict-like
             Mapping of :py:class:`Variable` objects holding the coordinate labels
             to index.
+        options : dict-like
+            Keyword arguments passed to this constructor. Propagated from
+            the ``**options`` argument of :py:meth:`xarray.DataArray.set_xindex`
+            or :py:meth:`xarray.Dataset.set_xindex`.
 
         Returns
         -------