diff --git a/templates/Vagrantfile.erb b/templates/Vagrantfile.erb
index 9c714fc4..9f7896bb 100644
--- a/templates/Vagrantfile.erb
+++ b/templates/Vagrantfile.erb
@@ -29,6 +29,8 @@ Vagrant.configure("2") do |c|
   <% case config[:provider]
      when "virtualbox" %>
     p.customize ["modifyvm", :id, "--<%= key %>", "<%= value %>"]
+  <% when "parallels" %>
+    p.customize ["set", :id, "--<%= key.to_s.gsub('_', '-') %>", "<%= value %>"]
   <% when "rackspace", "softlayer" %>
     p.<%= key %> = "<%= value%>"
   <% when /^vmware_/ %>