diff --git a/Vagrantfile b/Vagrantfile
index 30597b6..a20f8bf 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -9,9 +9,9 @@ VAGRANTFILE_API_VERSION = '2'
 # Example overrides:
 #   echo "ENV['PASSENGER_DOCKER_PATH'] ||= '../../phusion/passenger-docker'   " >> ~/.vagrant.d/Vagrantfile
 #   echo "ENV['BASE_BOX_URL']          ||= 'd\:/dev/vm/vagrant/boxes/phusion/'" >> ~/.vagrant.d/Vagrantfile
-BASE_BOX_URL          = ENV['BASE_BOX_URL']    || 'https://oss-binaries.phusionpassenger.com/vagrant/boxes/'
-VAGRANT_BOX_URL       = ENV['VAGRANT_BOX_URL'] || BASE_BOX_URL + 'ubuntu-12.04.3-amd64-vbox.box'
-VMWARE_BOX_URL        = ENV['VMWARE_BOX_URL']  || BASE_BOX_URL + 'ubuntu-12.04.3-amd64-vmwarefusion.box'
+BASE_BOX_URL          = ENV['BASE_BOX_URL']    || 'https://oss-binaries.phusionpassenger.com/vagrant/boxes/latest/'
+VAGRANT_BOX_URL       = ENV['VAGRANT_BOX_URL'] || BASE_BOX_URL + 'ubuntu-12.04-amd64-vbox.box'
+VMWARE_BOX_URL        = ENV['VMWARE_BOX_URL']  || BASE_BOX_URL + 'ubuntu-12.04-amd64-vmwarefusion.box'
 BASEIMAGE_PATH        = ENV['BASEIMAGE_PATH' ] || '.'
 PASSENGER_DOCKER_PATH = ENV['PASSENGER_PATH' ] || '../passenger-docker'
 DOCKERIZER_PATH       = ENV['DOCKERIZER_PATH'] || '../dockerizer'