diff --git a/Vagrantfile b/Vagrantfile
index 719a997..4499297 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -39,8 +39,8 @@ Vagrant.configure(2) do |config|
   config.vm.box = CONFIG['box']['name']
   config.vm.synced_folder '.', '/vagrant', disabled: true
   config.vm.provider 'virtualbox' do |vb|
-    vb.customize ['modifyvm', :id, '--memory', CONFIG['resources']['memory']]
-    vb.customize ['modifyvm', :id, '--cpus', CONFIG['resources']['vcpus']]
+    vb.memory = CONFIG['resources']['memory']
+    vb.cpus = CONFIG['resources']['vcpus']
     vb.customize ['modifyvm', :id, '--largepages', 'on']
     vb.customize ['modifyvm', :id, '--pae', 'off']
   end
diff --git a/doc/source/requirements.rst b/doc/source/requirements.rst
index e47ef67..3137fb6 100644
--- a/doc/source/requirements.rst
+++ b/doc/source/requirements.rst
@@ -6,12 +6,12 @@ Vagrant
 
 The installation of Vagrant is documented in the `Vagrant
 documentation <https://docs.vagrantup.com/v2/installation/index.html>`__.
-Ensure to use at least version ``1.7.2`` of Vagrant.
+Ensure to use at least version ``1.7.4`` of Vagrant.
 
 ::
 
     $ vagrant --version
-    Vagrant 1.7.2
+    Vagrant 1.7.4
 
 Vagrant plugins
 ~~~~~~~~~~~~~~~