diff --git a/requirements.txt b/requirements.txt
index 2df9e54..249cb52 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ alabaster==0.7.6
 argh==0.26.1
 argparse==1.2.1
 docutils==0.12
-html5lib==0.999
+html5lib==0.999999999
 meld3==0.6.10
 pathtools==0.1.2
 pytz==2015.4