diff --git a/README.md b/README.md
index 295cb83f..f1315398 100644
--- a/README.md
+++ b/README.md
@@ -177,6 +177,19 @@ To specify a custom serializer for the items within an array:
 ```ruby
 render :json => @posts, :each_serializer => FancyPostSerializer
 ```
+#### 4. Define default_serializer_options in your controller
+
+If you define `default_serializer_options` method in your controller,
+all serializers in actions of this controller and it's children will use them.
+One of options may be `root: false`
+
+```ruby
+def default_serializer_options
+  {
+    root: false
+  }
+end
+```
 
 ## Getting the old version