diff --git a/lib/vagrant/version.rb b/lib/vagrant/version.rb
index 9c869935c..323b908cb 100644
--- a/lib/vagrant/version.rb
+++ b/lib/vagrant/version.rb
@@ -2,5 +2,5 @@ module Vagrant
   # This will always be up to date with the current version of Vagrant,
   # since it is used to generate the gemspec and is also the source of
   # the version for `vagrant -v`
-  VERSION = "0.5.0"
+  VERSION = "0.5.1.dev"
 end