diff --git a/requirements.txt b/requirements.txt
index 587c941..7ae1d29 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 beautifulsoup4>=4.1.3
-html5lib>=1.0b2
+html5lib>=1.0b2,<=1.0b8
 requests>=2.10.0
 six>=1.5.0
 urllib3>=1.10