diff --git a/requirements.txt b/requirements.txt
index 2055447..3e234ae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ django-overextends==0.4.1
 django-taggit==0.18.3
 django-treebeard==4.0.1
 djangorestframework==3.4.0
-html5lib==0.999999
+html5lib==0.999999999
 numpy==1.9.2
 oauthlib==1.1.2
 python-dateutil==2.4.2