diff --git a/BUGS.md b/BUGS.md
index 9f8cb93..91630eb 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -1,6 +1,8 @@
 BUGS:
 
+- como gerar key para secure cookie.
 - implementar xsrf. Ver [http://www.tornadoweb.org/en/stable/guide/security.html#cross-site-request-forgery-protection]()
+- verificar se ha questoes
 
 TODO:
 
diff --git a/serve.py b/serve.py
index 1204036..735c0ba 100755
--- a/serve.py
+++ b/serve.py
@@ -1,4 +1,4 @@
-#!/opt/local/bin/python3.6
+#!/usr/bin/env python3.6
 
 # python standard library
 import os
--
libgit2 0.21.2