diff --git a/requires.txt b/requires.txt
--- a/requires.txt
+++ b/requires.txt
@@ -5,7 +5,7 @@ formencode==1.2.4
 SQLAlchemy==0.7.4
 Mako==0.5.0
 pygments>=1.4
-whoosh<1.8
+whoosh<2.4
 celery>=2.2.5,<2.3
 babel
 python-dateutil>=1.5.0,<2.0.0