diff --git a/Gemfile b/Gemfile
index 14b158e..19e874a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 group :development do
-  gem 'vagrant', git: 'https://github.com/mitchellh/vagrant.git', tag: 'v1.8.7'
+  gem 'vagrant', git: 'https://github.com/mitchellh/vagrant.git'
   gem 'guard'
   gem 'guard-rspec'
   gem 'rb-inotify'
@@ -9,10 +9,9 @@ end
 
 group :development, :test do
   gem 'rake', '~> 10.4.2'
-  gem 'rspec', '~> 2.99.0'
+  gem 'rspec', '~> 3.5.0'
   gem 'coveralls', '~> 0.7.2', require: (ENV['COVERAGE'] == 'true')
-  # The is the ref *just* before we switch to childprocess 0.6, which conflicts with vagrant 1.8 deps.
-  gem 'vagrant-spec', git: 'https://github.com/mitchellh/vagrant-spec.git', ref: '5006bc73cd8796465ca09307d4774f8ec8375aa0'
+  gem 'vagrant-spec', git: 'https://github.com/mitchellh/vagrant-spec.git'
 end
 
 group :plugins do
diff --git a/README.md b/README.md
index f554b2c..7e0d43f 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/fgrehm/vagrant-lxc.png?branch=master)](https://travis-ci.org/fgrehm/vagrant-lxc) [![Gem Version](https://badge.fury.io/rb/vagrant-lxc.png)](http://badge.fury.io/rb/vagrant-lxc) [![Code Climate](https://codeclimate.com/github/fgrehm/vagrant-lxc.png)](https://codeclimate.com/github/fgrehm/vagrant-lxc) [![Coverage Status](https://coveralls.io/repos/fgrehm/vagrant-lxc/badge.png?branch=master)](https://coveralls.io/r/fgrehm/vagrant-lxc) [![Gitter chat](https://badges.gitter.im/fgrehm/vagrant-lxc.png)](https://gitter.im/fgrehm/vagrant-lxc)
 
-[LXC](http://lxc.sourceforge.net/) provider for [Vagrant](http://www.vagrantup.com/) 1.8+
+[LXC](http://lxc.sourceforge.net/) provider for [Vagrant](http://www.vagrantup.com/) 1.9+
 
 This is a Vagrant plugin that allows it to control and provision Linux Containers
 as an alternative to the built in VirtualBox provider for Linux hosts. Check out
@@ -17,8 +17,8 @@ to see it in action.
 
 ## Requirements
 
-* [Vagrant 1.8+](http://www.vagrantup.com/downloads.html)
-* lxc >=1.0
+* [Vagrant 1.9+](http://www.vagrantup.com/downloads.html)
+* lxc >=2.1
 * `redir` (if you are planning to use port forwarding)
 * `brctl` (if you are planning to use private networks, on Ubuntu this means `apt-get install bridge-utils`)