diff --git a/python-spec/src/somacore/options.py b/python-spec/src/somacore/options.py
index 4e09ca37..a360287f 100644
--- a/python-spec/src/somacore/options.py
+++ b/python-spec/src/somacore/options.py
@@ -174,6 +174,7 @@ class ResultOrder(enum.Enum):
     ValSliceOrSequence[int],
     npt.NDArray[np.integer],
     pa.IntegerArray,
+    pa.ChunkedArray,
 ]
 """A single coordinate range for one dimension of a sparse nd-array."""
 SparseNDCoords = Sequence[SparseNDCoord]