diff --git a/requirements.txt b/requirements.txt
index ae4b3b6..a6db233 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ future==0.16.0
 gast==0.2.0
 gensim==3.4.0
 grpcio==1.10.0
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 isort==4.3.4
 jmespath==0.9.3