diff --git a/pip-requirements.txt b/pip-requirements.txt
index acdc494..d37274a 100644
--- a/pip-requirements.txt
+++ b/pip-requirements.txt
@@ -9,7 +9,7 @@ funcsigs==1.0.2
 futures==3.2.0
 gast==0.2.0
 grpcio==1.12.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.7
 Markdown==2.6.11
 mock==2.0.0