diff --git a/build-root/vagrant/Vagrantfile b/build-root/vagrant/Vagrantfile
index fac37ea..5b374f2 100644
--- a/build-root/vagrant/Vagrantfile
+++ b/build-root/vagrant/Vagrantfile
@@ -64,6 +64,10 @@
       vb.customize ["modifyvm", :id, "--ioapic", "on"]
       vb.memory = "#{vmram}"
       vb.cpus = "#{vmcpu}"
+
+      #support for the SSE4.x instruction is required in some versions of VB.
+      vb.customize ["setextradata", :id, "VBoxInternal/CPUM/SSE4.1", "1"]
+      vb.customize ["setextradata", :id, "VBoxInternal/CPUM/SSE4.2", "1"]
   end
   config.vm.provider "vmware_fusion" do |fusion,override|
     fusion.vmx["memsize"] = "#{vmram}"