diff --git a/anagrams/requirements.txt b/anagrams/requirements.txt
index 7613846..1c2dd9c 100644
--- a/anagrams/requirements.txt
+++ b/anagrams/requirements.txt
@@ -2,7 +2,7 @@ appnope==0.1.0
 bleach==1.5.0
 decorator==4.0.11
 entrypoints==0.2.2
-html5lib==0.9999999
+html5lib==0.99999999
 ipykernel==4.5.2
 ipython==5.1.0
 ipython-genutils==0.1.0