diff --git a/pip-requires b/pip-requires
index e590f36..6b3c83e 100644
--- a/pip-requires
+++ b/pip-requires
@@ -2,7 +2,7 @@ SQLAlchemy>=0.7.8,<=0.7.9
 Cheetah==2.4.4
 amqplib>=0.6.1
 anyjson>=0.2.4
-boto==2.1.1
+boto
 eventlet>=0.9.17
 kombu>=1.0.4
 lxml>=2.3,<=2.3.5