diff --git a/requirements.txt b/requirements.txt
index 5f637d9..aec9a72 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ gensim==3.2.0
 gunicorn==19.7.1
 guzzle-sphinx-theme==0.7.11
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.99999999
 httpie==0.9.9
 humanfriendly==4.6
 idna==2.6