diff --git a/requirements.txt b/requirements.txt
index 1e1099e..3c5272a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ decorator==4.4.0
 edward==1.3.5
 gpflow==1.4.1
 h5py==2.9.0
-html5lib==0.9999999
+html5lib==0.99999999
 importlib-metadata==0.18
 ipykernel==5.1.1
 ipython==7.5.0