diff --git a/src/metriki/app.py b/src/metriki/app.py
index f0c6556..c7a9aa5 100644
--- a/src/metriki/app.py
+++ b/src/metriki/app.py
@@ -47,7 +47,7 @@ class BaseView(web.View):
     def insert(self, table, data):
         data['ip'] = self.ip
         data['created'] = datetime.now()
-        data = json.loads(json.dumps(data))
+        data = json.loads(json.dumps(data,default=str))
         return self.db[table].insert(data)
 
     def find(self,table,data=None):