diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index 2abeebce7..1f58ece5a 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -177,6 +177,10 @@ def json_key
       end
     end
 
+    def as_json
+      self.class.adapter.new(self).to_json
+    end
+
     def id
       object.id if object
     end
diff --git a/test/adapter_test.rb b/test/adapter_test.rb
index d76559d55..14e9c1012 100644
--- a/test/adapter_test.rb
+++ b/test/adapter_test.rb
@@ -38,6 +38,10 @@ def test_create_adapter_with_override
         adapter = ActiveModel::Serializer::Adapter.create(@serializer, { adapter: :json_api})
         assert_equal ActiveModel::Serializer::Adapter::JsonApi, adapter.class
       end
+
+      def test_as_json_is_sent_to_adapter
+        assert_equal JSON.parse(@serializer.as_json), {"name" => nil, "description" => nil}
+      end
     end
   end
 end