diff --git a/requirements.txt b/requirements.txt
index ae8251c..e72c4d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ chardet==3.0.4
 enum34==1.1.6
 gym==0.9.4
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 Keras==2.0.9
 Markdown==2.6.9