diff --git a/requirements.txt b/requirements.txt
index 3ca94860..ea990a86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 Babel>=1.3
 iso8601>=0.1.9
 netaddr>=0.7.6
-oslo.config>=1.2.1
+oslo.config>=1.4.0.0a3
 pbr>=0.6,!=0.7,<1.0
 python-keystoneclient>=0.9.0
 requests>=1.1