diff --git a/Vagrantfile b/Vagrantfile
index 0a98ad9b1..6ff15f40d 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -20,6 +20,7 @@ Vagrant.configure(2) do |config|
   config.vm.box = "freedombox/plinth-dev"
   config.vm.network "forwarded_port", guest: 443, host: 4430
   config.vm.provider "virtualbox" do |vb|
+    vb.cpus = 2
     vb.memory = 2048
   end
   config.vm.provision "shell", inline: <<-SHELL