diff --git a/requirements.txt b/requirements.txt
index 46174c8..923f6a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ cycler==0.10.0
 gast==0.2.0
 grpcio==1.9.1
 google_speech
-html5lib==0.9999999
+html5lib==0.999999999
 imutils==0.4.5
 Markdown==2.6.11
 matplotlib==2.1.2