diff --git a/requirements.txt b/requirements.txt
index b462d9c..a8096af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ defer==1.0.6
 dirspec==13.10
 dnspython==1.11.1
 duplicity==0.6.23
-html5lib==0.999
+html5lib==0.999999999
 httplib2==0.8
 joblib==0.7.1
 lockfile==0.8