diff --git a/BOXES.md b/BOXES.md
index 10ebde3..5f51ef6 100644
--- a/BOXES.md
+++ b/BOXES.md
@@ -52,5 +52,5 @@ on knowing what makes a base box for vagrant-lxc, here's what's needed:
 | ---             | ---       | ---         |
 | `provider`      | Yes       | Required by Vagrant |
 | `version`       | Yes       | Tracks backward incompatibilities |
-| `built-on`      | No        | Date / time when the box was packaged |
+| `built-on`      | No        | Date / time when the box was packaged for the first time |
 | `template-opts` | No        | Extra options to be passed to the `lxc-template` script provided with the .box package |
diff --git a/lib/vagrant-lxc/action/setup_package_files.rb b/lib/vagrant-lxc/action/setup_package_files.rb
index a770604..0132035 100644
--- a/lib/vagrant-lxc/action/setup_package_files.rb
+++ b/lib/vagrant-lxc/action/setup_package_files.rb
@@ -45,10 +45,12 @@ module Vagrant
           box_dir = @env[:machine].box.directory
           FileUtils.cp box_dir.join('lxc-template').to_s, @env['package.directory'].to_s
           FileUtils.cp box_dir.join('metadata.json').to_s, @env['package.directory'].to_s
-          # TODO: Update built-on metadata.json
           if (conf = box_dir.join('lxc.conf')).exist?
             FileUtils.cp conf.to_s, @env['package.directory'].to_s
           end
+          if (conf = box_dir.join('lxc-config')).exist?
+            FileUtils.cp conf.to_s, @env['package.directory'].to_s
+          end
         end
       end
     end
diff --git a/spec/unit/action/setup_package_files_spec.rb b/spec/unit/action/setup_package_files_spec.rb
index cf39158..0527acd 100644
--- a/spec/unit/action/setup_package_files_spec.rb
+++ b/spec/unit/action/setup_package_files_spec.rb
@@ -14,7 +14,7 @@ describe Vagrant::LXC::Action::SetupPackageFiles do
 
   before do
     box.directory.mkdir
-    files = %w( lxc-template metadata.json lxc.conf ).map { |f| box.directory.join(f) }
+    files = %w( lxc-template metadata.json lxc.conf lxc-config ).map { |f| box.directory.join(f) }
     (files + [rootfs_path]).each do |file|
       file.open('w') { |f| f.puts file.to_s }
     end
@@ -41,6 +41,10 @@ describe Vagrant::LXC::Action::SetupPackageFiles do
       env['package.directory'].join('lxc-template').should be_file
     end
 
+    it 'copies box lxc-config to package directory' do
+      env['package.directory'].join('lxc-config').should be_file
+    end
+
     it 'moves the compressed rootfs to package directory' do
       env['package.directory'].join(rootfs_path.basename).should be_file
       env['package.rootfs'].should_not be_file