Renamed PyString to PyBytes
diff --git a/Modules/_heapqmodule.c b/Modules/_heapqmodule.c
index 06ed743..1482b5a 100644
--- a/Modules/_heapqmodule.c
+++ b/Modules/_heapqmodule.c
@@ -658,6 +658,6 @@
 	m = Py_InitModule3("_heapq", heapq_methods, module_doc);
 	if (m == NULL)
     		return;
-	PyModule_AddObject(m, "__about__", PyString_FromString(__about__));
+	PyModule_AddObject(m, "__about__", PyBytes_FromString(__about__));
 }