diff --git a/ox/text.py b/ox/text.py
index d2ecdea..4354ce9 100644
--- a/ox/text.py
+++ b/ox/text.py
@@ -119,7 +119,8 @@ UA_REGEXPS = {
         '(Google Web Preview).+Chrome\/(\d+)',
         '(Googlebot)\/(\d+)',
         '(WebCrawler)\/(\d+)',
-        '(Yahoo! Slurp)\/(\d+)'
+        '(Yahoo! Slurp)\/(\d+)',
+        '(YandexBot)\/([\d\.]+)',
     ],
     'system': [
         '(Android) (\d+)',