diff --git a/Gemfile b/Gemfile
index 7fc3a7e..7525408 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :development do
-  gem 'vagrant', git: 'https://github.com/mitchellh/vagrant.git'
+  gem 'vagrant', git: 'https://github.com/mitchellh/vagrant.git', tag: 'v1.5.1'
   gem 'guard'
   gem 'guard-rspec'
   gem 'rb-inotify'
diff --git a/Gemfile.lock b/Gemfile.lock
index e6ae194..9cc543a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,9 +22,10 @@ GIT
 
 GIT
   remote: https://github.com/mitchellh/vagrant.git
-  revision: 56dd0e8531e1810fc3ceb17411eeded711794f59
+  revision: 6977e93ba98fd19112b1fed74dafb8619f581984
+  tag: v1.5.1
   specs:
-    vagrant (1.5.1.dev)
+    vagrant (1.5.1)
       bundler (~> 1.5.2)
       childprocess (~> 0.5.0)
       erubis (~> 2.7.0)