diff --git a/requirements.txt b/requirements.txt
index 02412ff..f8c0142 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,7 +67,7 @@ gensim==0.12.3
 grpcio==1.10.0
 h5py==2.6.0
 hdf5storage==0.1.14
-html5lib==0.9999999
+html5lib==0.999999999
 hyperlink==17.3.1
 idna==2.6
 image==1.4.3