diff --git a/src/technologies/o.json b/src/technologies/o.json
index fb34b25cd..e0a6701c6 100644
--- a/src/technologies/o.json
+++ b/src/technologies/o.json
@@ -1186,9 +1186,12 @@
       30
     ],
     "description": "Outlook on the web is an information manager web app. It includes a web-based email client, a calendar tool, a contact manager, and a task manager.",
-    "html": "<link\\s[^>]*href=\"[^\"]*?([\\d.]+)/themes/resources/owafont\\.css\\;version:\\1",
     "icon": "Outlook.svg",
     "implies": "Microsoft ASP.NET",
+    "html": "<link[^>]+/owa/auth/([\\d\\.]+)/themes/resources\\;version:\\1",
+    "headers": {
+      "X-OWA-Version": "([\\d\\.]+)?\\;version:\\1"
+    },
     "js": {
       "IsOwaPremiumBrowser": ""
     },