diff --git a/dockerfiles/infra/f20/Dockerfile b/dockerfiles/infra/f20/Dockerfile
index f81a8b9..180a353 100644
--- a/dockerfiles/infra/f20/Dockerfile
+++ b/dockerfiles/infra/f20/Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora
+FROM fedora:20
 MAINTAINER OpenStack <openstack-dev@lists.openstack.org>
 
 RUN yum -y update