diff --git a/requirements.txt b/requirements.txt
index 8ab4026..d8e75e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ CairoSVG==1.0.9
 cffi==0.8.6
 cssselect==0.9.1
 docopt==0.6.2
-html5lib==0.999
+html5lib==0.999999999
 Jinja2==2.7.3
 lxml==3.4.0
 Markdown==2.5.1