diff --git a/contrib/gitian/Vagrantfile b/contrib/gitian/Vagrantfile
index d77d9282b..c6260980e 100644
--- a/contrib/gitian/Vagrantfile
+++ b/contrib/gitian/Vagrantfile
@@ -1,25 +1,26 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
 Vagrant.configure("2") do |config|
 
   # This needs to be the same as the current Gitian linux build target for lxc
   # or someone needs to fix Gitian to correctly handle building on a different
   # distribution than the lxc container has.
   config.vm.box = "abc-xenial"
 
   config.vm.synced_folder '.', '/vagrant', disabled: true
   config.vm.synced_folder '../..', '/vagrant'
 
   config.vm.provider "virtualbox" do |vb|
-    # Display the VirtualBox GUI when booting the machine
-    vb.gui = true
+    # Uncomment to display the VirtualBox GUI when booting the machine
+    # This may be useful for debugging.
+    #vb.gui = true
   
     # Customize the amount of memory on the VM:
-    vb.memory = "8048"
+    vb.memory = "12288"
     vb.cpus = 4
   end
   
   # Provision with the associated shell script
   config.vm.provision "shell", path: "provisioner.sh"
 end