many more types to initialize (I had to expose some of them)
diff --git a/Include/sliceobject.h b/Include/sliceobject.h
index dfc30c7..8ab62dd 100644
--- a/Include/sliceobject.h
+++ b/Include/sliceobject.h
@@ -25,6 +25,7 @@
 } PySliceObject;
 
 PyAPI_DATA(PyTypeObject) PySlice_Type;
+PyAPI_DATA(PyTypeObject) PyEllipsis_Type;
 
 #define PySlice_Check(op) (Py_TYPE(op) == &PySlice_Type)