diff --git a/python-spec/src/somacore/options.py b/python-spec/src/somacore/options.py
index 17faadb..9e66dcd 100644
--- a/python-spec/src/somacore/options.py
+++ b/python-spec/src/somacore/options.py
@@ -5,7 +5,7 @@
 """
 
 import enum
-from typing import Any, Dict, Mapping, Optional, Sequence, TypeVar, Union
+from typing import Any, Dict, Mapping, Optional, Sequence, Tuple, TypeVar, Union
 
 import attrs
 import numpy as np
@@ -175,6 +175,7 @@ class ResultOrder(enum.Enum):
 
 SparseNDCoord = Union[
     None,
+    Tuple[int, ...],
     ValSliceOrSequence[int],
     npt.NDArray[np.integer],
     pa.IntegerArray,
diff --git a/python-spec/src/somacore/types.py b/python-spec/src/somacore/types.py
index 45b9a12..5e93c7b 100644
--- a/python-spec/src/somacore/types.py
+++ b/python-spec/src/somacore/types.py
@@ -9,6 +9,7 @@
 from concurrent import futures
 from typing import (
     TYPE_CHECKING,
+    Any,
     NoReturn,
     Optional,
     Sequence,
@@ -85,6 +86,16 @@ def stop(self) -> Optional[_T_co]: ...
     @property
     def step(self) -> Optional[_T_co]: ...
 
+    if sys.version_info >= (3, 12):
+
+        @property
+        def __orig_bases__(self) -> Any:
+            # Only exists in Python 3.12 and above
+            from types import get_original_bases
+
+            return get_original_bases(int)
+            # return get_original_bases(_T_co)
+
     if sys.version_info < (3, 10) and not TYPE_CHECKING:
         # Python 3.9 and below have a bug where any Protocol with a @property
         # was always regarded as runtime-checkable.