diff --git a/Parser/Python.asdl b/Parser/Python.asdl
index 3dc3c60..7c2c9077 100644
--- a/Parser/Python.asdl
+++ b/Parser/Python.asdl
@@ -11,7 +11,12 @@
 
 	stmt = FunctionDef(identifier name, arguments args, 
                            stmt* body, expr* decorators, expr? returns)
-	      | ClassDef(identifier name, expr* bases, stmt* body)
+	      | ClassDef(identifier name, 
+			 expr* bases,
+			 keyword* keywords,
+			 expr? starargs,
+			 expr? kwargs,
+			 stmt* body)
 	      | Return(expr? value)
 
 	      | Delete(expr* targets)