diff --git a/requirements.txt b/requirements.txt
index 444bfae..2400daa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ gast==0.2.0
 graphviz==0.8.2
 grpcio==1.10.0
 h5py==2.8.0rc1
-html5lib==0.9999999
+html5lib==0.999999999
 joblib==0.11
 Keras==2.1.5
 kiwisolver==1.0.1