diff --git a/requirements.txt b/requirements.txt
index 05c6126..35b2a19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ Flask==0.12.2
 functools32==3.2.3.post2
 future==0.16.0
 grs==0.7.0
-html5lib==0.999
+html5lib==0.99999999
 idna==2.5
 ipaddress==1.0.18
 ipykernel==4.6.1