diff --git a/requirements.txt b/requirements.txt
index 04e9709..3d13270 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ graphviz==0.8.4
 grpcio==1.19.0
 guacamole==0.9.2
 h5py==2.9.0
-html5lib==0.999
+html5lib==0.99999999
 httplib2==0.9.1
 idna==2.10
 imageio==2.3.0