diff --git a/requirements.txt b/requirements.txt
index ccb88b2..461e6cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 PyYAML
 nose >=1.0.0
-boto >=2.1
+boto ==2.4.1
 bunch >=1.0.0
 # 0.14 switches to libev, that means bootstrap needs to change too
 gevent ==0.13.6