diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 18f2a33..e20c95f 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -241,6 +241,10 @@
         self.assertIsInstance(v.build, int)
         self.assertIsInstance(v.platform, int)
         self.assertIsInstance(v.service_pack, str)
+        self.assertIsInstance(v.service_pack_minor, int)
+        self.assertIsInstance(v.service_pack_major, int)
+        self.assertIsInstance(v.suite_mask, int)
+        self.assertIsInstance(v.product_type, int)
         self.assertEqual(v[0], v.major)
         self.assertEqual(v[1], v.minor)
         self.assertEqual(v[2], v.build)