diff --git a/onnx/onnx_cpp2py_export/defs.pyi b/onnx/onnx_cpp2py_export/defs.pyi
index f2c69b8bcbe..55ef9c88e3f 100644
--- a/onnx/onnx_cpp2py_export/defs.pyi
+++ b/onnx/onnx_cpp2py_export/defs.pyi
@@ -20,6 +20,7 @@ class OpSchema:
         outputs: Sequence[OpSchema.FormalParameter] = (),
         type_constraints: Sequence[tuple[str, Sequence[str], str]] = (),
         attributes: Sequence[OpSchema.Attribute] = (),
+        node_determinism: OpSchema.NodeDeterminism = OpSchema.NodeDeterminism.Unknown,  # noqa: F821
     ) -> None: ...
     @property
     def file(self) -> str: ...
@@ -57,6 +58,10 @@ class OpSchema:
     def has_type_and_shape_inference_function(self) -> bool: ...
     @property
     def has_data_propagation_function(self) -> bool: ...
+    @property
+    def node_determinism(self) -> NodeDeterminism: ...
+    @property
+    def non_deterministic(self) -> bool: ...
     @staticmethod
     def is_infinite(v: int) -> bool: ...
     def consumed(self, schema: OpSchema, i: int) -> tuple[UseType, int]: ...