diff --git a/requirements.txt b/requirements.txt
index b306926..1748c15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ future==0.16.0
 gast==0.2.0
 grpcio==1.11.0
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 imagesize==1.0.0
 itsdangerous==0.24