diff --git a/Include/Python-ast.h b/Include/Python-ast.h
index 233a576..e07f025 100644
--- a/Include/Python-ast.h
+++ b/Include/Python-ast.h
@@ -82,6 +82,9 @@
                 struct {
                         identifier name;
                         asdl_seq *bases;
+                        asdl_seq *keywords;
+                        expr_ty starargs;
+                        expr_ty kwargs;
                         asdl_seq *body;
                 } ClassDef;
                 
@@ -380,8 +383,9 @@
 stmt_ty _Py_FunctionDef(identifier name, arguments_ty args, asdl_seq * body,
                         asdl_seq * decorators, expr_ty returns, int lineno, int
                         col_offset, PyArena *arena);
-#define ClassDef(a0, a1, a2, a3, a4, a5) _Py_ClassDef(a0, a1, a2, a3, a4, a5)
-stmt_ty _Py_ClassDef(identifier name, asdl_seq * bases, asdl_seq * body, int
+#define ClassDef(a0, a1, a2, a3, a4, a5, a6, a7, a8) _Py_ClassDef(a0, a1, a2, a3, a4, a5, a6, a7, a8)
+stmt_ty _Py_ClassDef(identifier name, asdl_seq * bases, asdl_seq * keywords,
+                     expr_ty starargs, expr_ty kwargs, asdl_seq * body, int
                      lineno, int col_offset, PyArena *arena);
 #define Return(a0, a1, a2, a3) _Py_Return(a0, a1, a2, a3)
 stmt_ty _Py_Return(expr_ty value, int lineno, int col_offset, PyArena *arena);