diff --git a/requirements.txt b/requirements.txt
index 908de2b..04e90ea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ chardet==3.0.4
 gast==0.2.0
 grpcio==1.11.0
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 Keras==2.1.6
 Markdown==2.6.11