diff --git a/vagrant.gemspec b/vagrant.gemspec
index 2c47bf1897f..b85478523d1 100644
--- a/vagrant.gemspec
+++ b/vagrant.gemspec
@@ -16,6 +16,8 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = ">= 1.3.6"
 
   s.add_dependency "base64", "~> 0.2.0"
+  s.add_dependency "logger", "~> 1.6.1"
+  s.add_dependency "ostruct", "~> 0.1.0"
   s.add_dependency "bcrypt_pbkdf", "~> 1.1"
   s.add_dependency "childprocess", "~> 4.1.0"
   s.add_dependency "ed25519", "~> 1.3.0"