diff --git a/requirements.txt b/requirements.txt
index 202e23a..982fb35 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ docutils==0.14
 enum34==1.1.6
 gensim==3.1.0
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 jmespath==0.9.3
 Keras==2.1.2