diff --git a/.gitignore b/.gitignore
index cf6908d..9d510aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ doc/
 
 /tags
 /gems.tags
+/Gemfile.lock
 
 .vagrant
 /cache
diff --git a/Gemfile b/Gemfile
index 92fea22..a3e7670 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,10 +8,10 @@ group :development do
 end
 
 group :development, :test do
-  gem 'rake'
-  gem 'rspec',        '2.99.0'
-  gem 'coveralls',    require: (ENV['COVERAGE'] == 'true')
-  gem 'vagrant-spec', git: 'https://github.com/mitchellh/vagrant-spec.git'
+  gem 'rake', '~> 10.4.2'
+  gem 'rspec', '~> 2.99.0'
+  gem 'coveralls', '~> 0.7.2', require: (ENV['COVERAGE'] == 'true')
+  gem 'vagrant-spec', git: 'https://github.com/mitchellh/vagrant-spec.git', ref: '1df5a3af81cb7cce568b2eac52b8f6822bcb1d8e'
 end
 
 group :plugins do
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 4df5892..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,182 +0,0 @@
-GIT
-  remote: https://github.com/fgrehm/vagrant-cachier.git
-  revision: 40dddfb368526948e769492a00a7937c5a044a4d
-  specs:
-    vagrant-cachier (1.2.1)
-
-GIT
-  remote: https://github.com/fgrehm/vagrant-pristine.git
-  revision: 6d044265db17451c606f000bf43437e95a742bb4
-  specs:
-    vagrant-pristine (0.3.0)
-
-GIT
-  remote: https://github.com/mitchellh/vagrant-spec.git
-  revision: 1df5a3af81cb7cce568b2eac52b8f6822bcb1d8e
-  specs:
-    vagrant-spec (0.0.1)
-      childprocess (~> 0.5.0)
-      log4r (~> 1.1.9)
-      rspec (~> 2.14)
-      thor (~> 0.18.1)
-
-GIT
-  remote: https://github.com/mitchellh/vagrant.git
-  revision: 78ea5e4a78ce644717ab16d8001ab77430168f0f
-  tag: v1.7.4
-  specs:
-    vagrant (1.7.4)
-      bundler (>= 1.5.2, <= 1.10.5)
-      childprocess (~> 0.5.0)
-      erubis (~> 2.7.0)
-      hashicorp-checkpoint (~> 0.1.1)
-      i18n (>= 0.6.0, <= 0.8.0)
-      listen (~> 3.0.2)
-      log4r (~> 1.1.9, < 1.1.11)
-      net-scp (~> 1.1.0)
-      net-sftp (~> 2.1)
-      net-ssh (>= 2.6.6, < 2.10.0)
-      nokogiri (= 1.6.3.1)
-      rb-kqueue (~> 0.2.0)
-      rest-client (>= 1.6.0, < 2.0)
-      wdm (~> 0.1.0)
-      winrm (~> 1.3)
-      winrm-fs (~> 0.2.0)
-
-PATH
-  remote: .
-  specs:
-    vagrant-lxc (1.2.4)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    builder (3.2.2)
-    childprocess (0.5.6)
-      ffi (~> 1.0, >= 1.0.11)
-    coderay (1.1.0)
-    coveralls (0.7.2)
-      multi_json (~> 1.3)
-      rest-client (= 1.6.7)
-      simplecov (>= 0.7)
-      term-ansicolor (= 1.2.2)
-      thor (= 0.18.1)
-    diff-lcs (1.2.5)
-    docile (1.1.5)
-    erubis (2.7.0)
-    ffi (1.9.10)
-    formatador (0.2.5)
-    gssapi (1.2.0)
-      ffi (>= 1.0.1)
-    guard (2.12.8)
-      formatador (>= 0.2.4)
-      listen (>= 2.7, <= 4.0)
-      lumberjack (~> 1.0)
-      nenv (~> 0.1)
-      notiffany (~> 0.0)
-      pry (>= 0.9.12)
-      shellany (~> 0.0)
-      thor (>= 0.18.1)
-    guard-compat (1.2.1)
-    guard-rspec (4.6.2)
-      guard (~> 2.1)
-      guard-compat (~> 1.1)
-      rspec (>= 2.99.0, < 4.0)
-    gyoku (1.3.1)
-      builder (>= 2.1.2)
-    hashicorp-checkpoint (0.1.4)
-    httpclient (2.6.0.1)
-    i18n (0.7.0)
-    json (1.8.3)
-    listen (3.0.2)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-    little-plugger (1.1.3)
-    log4r (1.1.10)
-    logging (1.8.2)
-      little-plugger (>= 1.1.3)
-      multi_json (>= 1.8.4)
-    lumberjack (1.0.9)
-    method_source (0.8.2)
-    mime-types (2.6.1)
-    mini_portile (0.6.0)
-    multi_json (1.11.2)
-    nenv (0.2.0)
-    net-scp (1.1.2)
-      net-ssh (>= 2.6.5)
-    net-sftp (2.1.2)
-      net-ssh (>= 2.6.5)
-    net-ssh (2.9.2)
-    nokogiri (1.6.3.1)
-      mini_portile (= 0.6.0)
-    nori (2.6.0)
-    notiffany (0.0.6)
-      nenv (~> 0.1)
-      shellany (~> 0.0)
-    pry (0.10.1)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    rake (10.4.2)
-    rb-fsevent (0.9.5)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
-    rb-kqueue (0.2.4)
-      ffi (>= 0.5.0)
-    rest-client (1.6.7)
-      mime-types (>= 1.16)
-    rspec (2.99.0)
-      rspec-core (~> 2.99.0)
-      rspec-expectations (~> 2.99.0)
-      rspec-mocks (~> 2.99.0)
-    rspec-core (2.99.2)
-    rspec-expectations (2.99.2)
-      diff-lcs (>= 1.1.3, < 2.0)
-    rspec-mocks (2.99.4)
-    rubyntlm (0.4.0)
-    rubyzip (1.1.7)
-    shellany (0.0.1)
-    simplecov (0.10.0)
-      docile (~> 1.1.0)
-      json (~> 1.8)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.0)
-    slop (3.6.0)
-    term-ansicolor (1.2.2)
-      tins (~> 0.8)
-    thor (0.18.1)
-    tins (0.13.2)
-    uuidtools (2.1.5)
-    vagrant-omnibus (1.4.1)
-    wdm (0.1.1)
-    winrm (1.3.3)
-      builder (>= 2.1.2)
-      gssapi (~> 1.2)
-      gyoku (~> 1.0)
-      httpclient (~> 2.2, >= 2.2.0.2)
-      logging (~> 1.6, >= 1.6.1)
-      nori (~> 2.0)
-      rubyntlm (~> 0.4.0)
-      uuidtools (~> 2.1.2)
-    winrm-fs (0.2.0)
-      erubis (~> 2.7)
-      logging (~> 1.6, >= 1.6.1)
-      rubyzip (~> 1.1)
-      winrm (~> 1.3.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  coveralls
-  guard
-  guard-rspec
-  rake
-  rb-inotify
-  rspec (= 2.99.0)
-  vagrant!
-  vagrant-cachier!
-  vagrant-lxc!
-  vagrant-omnibus
-  vagrant-pristine!
-  vagrant-spec!