diff --git a/requirements.txt b/requirements.txt
index 908d00c..fcd1d25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Flask==0.12.2
 Flask-Compress==1.4.0
 gast==0.2.0
 grpcio==1.11.0
-html5lib==0.9999999
+html5lib==0.99999999
 idna==2.6
 ipython-genutils==0.2.0
 itsdangerous==0.24