diff --git a/lib/woothee/crawler.py b/lib/woothee/crawler.py
index 28b2180..25c7253 100644
--- a/lib/woothee/crawler.py
+++ b/lib/woothee/crawler.py
@@ -76,6 +76,10 @@ def challenge_crawlers(ua, result):
             util.update_map(result, dataset.get('bingbot'))
             return True
 
+    if 'BingPreview' in ua:
+        util.update_map(result, dataset.get('BingPreview'))
+        return True
+
     if 'Baidu' in ua:
         if 'compatible; Baiduspider' in ua\
                 or 'Baiduspider+' in ua or 'Baiduspider-image+' in ua:
diff --git a/lib/woothee/dataset.py b/lib/woothee/dataset.py
index 166c2ad..574997b 100644
--- a/lib/woothee/dataset.py
+++ b/lib/woothee/dataset.py
@@ -42,7 +42,7 @@
 
 
 def _init():
-    # GENERATED from dataset.yaml at Tue May 17 15:49:48 2016 by tell_k
+    # GENERATED from dataset.yaml at Sun Aug 14 15:48:54 2016 by taise
     obj = {'label': 'MSIE', 'name': 'Internet Explorer', 'type': 'browser'}  # NOQA
     obj['vendor'] = 'Microsoft'
     DATASET[obj['label']] = obj
@@ -295,6 +295,9 @@ def _init():
     obj = {'label': 'bingbot', 'name': 'bingbot', 'type': 'full'}  # NOQA
     obj['category'] = 'crawler'
     DATASET[obj['label']] = obj
+    obj = {'label': 'BingPreview', 'name': 'BingPreview', 'type': 'full'}  # NOQA
+    obj['category'] = 'crawler'
+    DATASET[obj['label']] = obj
     obj = {'label': 'Yeti', 'name': 'Naver Yeti', 'type': 'full'}  # NOQA
     obj['category'] = 'crawler'
     DATASET[obj['label']] = obj
diff --git a/woothee b/woothee
index 2acce35..26f91bc 160000
--- a/woothee
+++ b/woothee
@@ -1 +1 @@
-Subproject commit 2acce351b0268b54d07d31522cfbb4b21569fbbe
+Subproject commit 26f91bc2159641b1c284a22a6498cdd30a19bca3