diff --git a/requirements.txt b/requirements.txt
index 4d615e0..238ea7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -79,7 +79,7 @@ google-compute-engine==2.6.1
 grpcio==1.10.0
 gunicorn==19.7.1
 healthcheck==1.3.2
-html5lib==0.9999999
+html5lib==0.99999999
 httplib2==0.9.1
 humanize==0.5.1
 icalendar==3.11.7