diff --git a/requirements.txt b/requirements.txt
index 38ca14a..d5c92ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ gyp==0.1
 h5py==2.5.0
 HMMEd==0.8
 hmmlearn==0.1.1
-html5lib==0.9999999
+html5lib==0.99999999
 httplib2==0.9
 idna==2.5
 imagesize==0.7.1