diff --git a/requirements.txt b/requirements.txt
index 4cd983a..2341654 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ decorator==4.3.0
 gast==0.2.0
 grpcio==1.11.0
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 iml==0.6.0
 ipython>=7.16.3
 ipython-genutils==0.2.0