diff --git a/History.md b/History.md
index 9881660..974f46e 100644
--- a/History.md
+++ b/History.md
@@ -5,4 +5,11 @@
 * This release make sure that the `link_to_add_association` generates a correctly clickable
   link in the newer rails 3 versions as well. In rails 3.0.8. the html was double escaped.
 
+If you are upgrading from 1.0.4, you just have to update the gem. No other actions needed. If you are updating
+from earlier versions, it is safer to do
+
+    rails g cocoon:install
+
+This will copy the new `cocoon.js` files to your `public/javascripts` folder.
+