diff --git a/elements/adversary-groups.json b/elements/adversary-groups.json
index 3bb2920..a16107a 100644
--- a/elements/adversary-groups.json
+++ b/elements/adversary-groups.json
@@ -261,7 +261,8 @@
     {
       "group": "Axiom",
       "refs": [
-        "http://securelist.com/blog/research/57585/winnti-faq-more-than-just-a-game/"
+        "http://securelist.com/blog/research/57585/winnti-faq-more-than-just-a-game/",
+        "http://williamshowalter.com/a-universal-windows-bootkit/"
       ],
       "country": "CN",
       "synonyms": [