diff --git a/requirements.txt b/requirements.txt
index fcac50e..0de64b1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ backports.weakref==1.0.post1
 bleach==1.5.0
 funcsigs==1.0.2
 h5py==2.7.0
-html5lib==0.9999999
+html5lib==0.999999999
 Keras==2.0.7
 Markdown==3.0.1
 mock==2.0.0