diff --git a/budou/budou.py b/budou/budou.py
index 1e5ef47..2b84bf8 100644
--- a/budou/budou.py
+++ b/budou/budou.py
@@ -88,7 +88,8 @@ def serialize(self):
         'word': self.word,
         'pos': self.pos,
         'label': self.label,
-        'dependency': self.dependency
+        'dependency': self.dependency,
+        'has_cjk': self.has_cjk(),
     }
 
   def maybe_add_dependency(self, default_dependency_direction):