diff --git a/requirements.txt b/requirements.txt
index 7932788..33dd4ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ Flask-SQLAlchemy==2.1
 gevent==1.4.0
 greenlet==0.4.15
 gunicorn==19.4.5
-html5lib==0.9999999
+html5lib==0.999999999
 httpie==0.9.3
 itsdangerous==0.24
 Jinja2==2.10.1