diff --git a/README.md b/README.md
index 70356c4e28620eef6f87cc022dd3feb369a68b96..da5af0ee6fc00a4d29122610dd07c0be65a2fbd6 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 - [vagrant](http://www.vagrantup.com/)
 - [virtualbox](https://www.virtualbox.org/)
 - optional: [vagrant-hostsupdater](https://github.com/cogitatio/vagrant-hostsupdater)
+  - run `vagrant plugin install vagrant-hostsupdater` to install
 
 ## Get started: