diff --git a/docker/requirements.txt b/docker/requirements.txt
index 0a822a02..d46630c8 100644
--- a/docker/requirements.txt
+++ b/docker/requirements.txt
@@ -8,7 +8,7 @@ entrypoints==0.2.3
 enum34==1.1.6
 funcsigs==1.0.2
 gensim==3.1.0
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 ipykernel==4.6.1
 ipython==6.2.1