diff --git a/ChatModel/requirements.txt b/ChatModel/requirements.txt
index f4f22a0..6cb5a64 100644
--- a/ChatModel/requirements.txt
+++ b/ChatModel/requirements.txt
@@ -17,7 +17,7 @@ floyd-cli==0.10.35
 gast==0.2.0
 grpcio==1.10.0
 gunicorn==19.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 Markdown==2.6.11
 marshmallow==2.15.0