diff --git a/requirements.txt b/requirements.txt
index 19747fa..0817fb0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ decorator==4.3.0
 fire==0.1.3
 gast==0.2.0
 grpcio==1.14.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.7
 ipdb==0.11
 ipykernel==4.8.2