diff --git a/requirements.txt b/requirements.txt
index 2a57acb..d72bd57 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Flask==0.10.1
 gevent==1.2.1
 gpiozero==1.3.1
 greenlet==0.4.12
-html5lib==0.999
+html5lib==0.999999999
 ipython==2.3.0
 itsdangerous==0.24
 Jinja2==2.7.3