diff --git a/requirements.txt b/requirements.txt
index 0091ad2..e1390e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ gast==0.2.0
 gensim==3.4.0
 grpcio==1.12.1
 h5py==2.8.0
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.7
 ipython==6.4.0
 ipython-genutils==0.2.0