diff --git a/flask/flask/src/requirements.txt b/flask/flask/src/requirements.txt
index b948fe9..ea5cafa 100644
--- a/flask/flask/src/requirements.txt
+++ b/flask/flask/src/requirements.txt
@@ -21,7 +21,7 @@ celery==3.1.17
 chardet==2.0.1
 colorama==0.2.5
 decorator==3.4.0
-html5lib==0.999
+html5lib==0.999999999
 infinity==1.3
 intervals==0.3.1
 itsdangerous==0.24