New version of v8 from bleeding edge at revision 3649
diff --git a/test/mjsunit/json.js b/test/mjsunit/json.js
index bf44f78..35e1634 100644
--- a/test/mjsunit/json.js
+++ b/test/mjsunit/json.js
@@ -65,9 +65,9 @@
 GenericToJSONChecks(String, "x", "y");
 
 // Date toJSON
-assertEquals("1970-01-01T00:00:00Z", new Date(0).toJSON());
-assertEquals("1979-01-11T08:00:00Z", new Date("1979-01-11 08:00 GMT").toJSON());
-assertEquals("2005-05-05T05:05:05Z", new Date("2005-05-05 05:05:05 GMT").toJSON());
+assertEquals("1970-01-01T00:00:00.000Z", new Date(0).toJSON());
+assertEquals("1979-01-11T08:00:00.000Z", new Date("1979-01-11 08:00 GMT").toJSON());
+assertEquals("2005-05-05T05:05:05.000Z", new Date("2005-05-05 05:05:05 GMT").toJSON());
 var n1 = new Date(10000);
 n1.toISOString = function () { return "foo"; };
 assertEquals("foo", n1.toJSON());