diff --git a/README.md b/README.md
index b1f8441..07d3928 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,10 @@ order = 4
 
 ### Installare e configurare un nuovo server
 
+#### Software necessario
+ gem install deep_merge
+
+
 #### Creare un nuovo $(site-name)
 ##### Configurazione siteconf-$(sitename)
   1. Creare il repository git per la configurazione del site 
@@ -190,8 +194,6 @@ git push --set-upstream $(gcrypt_remote) master</pre>
   12. Lanciare l'esecuzione di puppet  `puppet apply -v /etc/puppet/manifests/site.pp`
 
 
-
-
 #### Appunti 
  - **module naming convention**
    Dalla [documentazione di puppet](https://docs.puppetlabs.com/puppet/latest/reference/modules_fundamentals.html#manifests): *`init.pp` is special and always contains a class with the same name as the module. You may not have a class named init.*