diff --git a/requirements.txt b/requirements.txt
index 5ae4f36..a7e1841 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ geopandas==0.3.0
 ggplot==0.11.5
 grpcio==1.10.0
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.99999999
 ipykernel==4.8.2
 ipython>=5.11
 ipython-genutils==0.2.0