diff --git a/requirements.lock.txt b/requirements.lock.txt
index 84cfc04..378f76e 100644
--- a/requirements.lock.txt
+++ b/requirements.lock.txt
@@ -11,7 +11,7 @@ decorator==4.0.11
 enum34==1.1.6
 Flask==0.10.1
 gpiozero==1.3.2
-html5lib==0.999
+html5lib==0.99999999
 ipython==5.3.0
 ipython-genutils==0.2.0
 itsdangerous==0.24