diff --git a/source/Ox/js/String.js b/source/Ox/js/String.js
index d66ed38a..e510f9a4 100644
--- a/source/Ox/js/String.js
+++ b/source/Ox/js/String.js
@@ -317,6 +317,7 @@ Ox.parseUserAgent = function(userAgent) {
                 /(NokiaBrowser)\/(\d+)/,
                 /(Opera) (\d+)/,
                 /(Opera)\/.+Version\/(\d+)/,
+                /(YandexBot)\/(\d+)/,
                 /Version\/(\d+).+(Safari)/
             ],
             system: [
diff --git a/source/UI/UI.js b/source/UI/UI.js
index 52eb26e0..cd134172 100644
--- a/source/UI/UI.js
+++ b/source/UI/UI.js
@@ -43,6 +43,11 @@ Ox.load.UI = function(options, callback) {
                 regexp: /Googlebot\/(\d+)\./,
                 version: 2
             },
+            {
+                name: 'YandexBot',
+                regexp: /(YandexBot)\/(\d+)\./,
+                version: 3
+            },
             {
                 name: 'Internet Explorer',
                 url: 'http://windows.microsoft.com/en-US/internet-explorer/products/ie/home',