diff --git a/tools/requirements.txt b/tools/requirements.txt
index c0f0bb6..91d04d1 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -43,7 +43,7 @@ grpcio==1.15.0
 gspread==3.0.1
 gym==0.10.5
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 humanize==0.5.1
 idna==2.6
 ipdb==0.11