diff --git a/requirements.txt b/requirements.txt
index 708b6cb..b68c67d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ chardet==3.0.4
 cycler==0.10.0
 funcsigs==1.0.2
 functools32==3.2.3.post2
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.5
 Keras==2.0.6
 Markdown==2.6.8