diff --git a/blog/security.py b/blog/security.py
index ed2ba13..24c443e 100644
--- a/blog/security.py
+++ b/blog/security.py
@@ -1,3 +1,9 @@
+"""
+TODO: upgrade to v1.0.0 as soon as released
+
+https://github.com/maxcountryman/flask-bcrypt/pull/66
+"""
+
 from flask_bcrypt import Bcrypt
 
 flask_bcrypt = Bcrypt()