diff --git a/README.md b/README.md
index 82d719d..7f87fd0 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,45 @@ Once you have an API that can describe itself in Swagger, you've opened the trea
 |[2.2.0](https://github.com/rswag/rswag/tree/2.2.0)|2.0|3.18.2|
 |[1.6.0](https://github.com/rswag/rswag/tree/1.6.0)|2.0|2.2.5|
 
+
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+**Table of Contents**
+
+- [rswag](#rswag)
+  - [Compatibility](#compatibility)
+  - [Getting Started](#getting-started)
+  - [The rspec DSL](#the-rspec-dsl)
+    - [Paths, Operations and Responses](#paths-operations-and-responses)
+    - [Null Values](#null-values)
+    - [Support for oneOf, anyOf or AllOf schemas](#support-for-oneof-anyof-or-allof-schemas)
+    - [Global Metadata](#global-metadata)
+      - [Supporting multiple versions of API](#supporting-multiple-versions-of-api)
+      - [Formatting the description literals:](#formatting-the-description-literals)
+    - [Specifying/Testing API Security](#specifyingtesting-api-security)
+  - [Configuration & Customization](#configuration--customization)
+    - [Output Location for Generated Swagger Files](#output-location-for-generated-swagger-files)
+    - [Input Location for Rspec Tests](#input-location-for-rspec-tests)
+    - [Referenced Parameters and Schema Definitions](#referenced-parameters-and-schema-definitions)
+    - [Response headers](#response-headers)
+    - [Response examples](#response-examples)
+    - [Enable auto generation examples from responses](#enable-auto-generation-examples-from-responses)
+      - [Running tests without documenting](#running-tests-without-documenting)
+        - [rswag helper methods](#rswag-helper-methods)
+        - [rswag response examples](#rswag-response-examples)
+    - [Route Prefix for Swagger JSON Endpoints](#route-prefix-for-swagger-json-endpoints)
+    - [Root Location for Swagger Files](#root-location-for-swagger-files)
+    - [Dynamic Values for Swagger JSON](#dynamic-values-for-swagger-json)
+    - [Custom Headers for Swagger Files](#custom-headers-for-swagger-files)
+    - [Enable Swagger Endpoints for swagger-ui](#enable-swagger-endpoints-for-swagger-ui)
+    - [Enable Simple Basic Auth for swagger-ui](#enable-simple-basic-auth-for-swagger-ui)
+    - [Route Prefix for the swagger-ui](#route-prefix-for-the-swagger-ui)
+    - [Customizing the swagger-ui](#customizing-the-swagger-ui)
+    - [Serve UI Assets Directly from your Web Server](#serve-ui-assets-directly-from-your-web-server)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+
+
 ## Getting Started ##
 
 1. Add this line to your applications _Gemfile_:
diff --git a/test-app/swagger/v1/swagger.json b/test-app/swagger/v1/swagger.json
index 8e09a3c..957206c 100644
--- a/test-app/swagger/v1/swagger.json
+++ b/test-app/swagger/v1/swagger.json
@@ -174,10 +174,10 @@
                 "schema": {
                   "oneOf": [
                     {
-                      "$ref": "#/components/schemas/blog"
+                      "$ref": "#/definitions/blog"
                     },
                     {
-                      "$ref": "#/components/schemas/flexible_blog"
+                      "$ref": "#/definitions/flexible_blog"
                     }
                   ]
                 }
@@ -191,10 +191,10 @@
               "schema": {
                 "oneOf": [
                   {
-                    "$ref": "#/components/schemas/blog"
+                    "$ref": "#/definitions/blog"
                   },
                   {
-                    "$ref": "#/components/schemas/flexible_blog"
+                    "$ref": "#/definitions/flexible_blog"
                   }
                 ]
               }
@@ -341,14 +341,36 @@
           "x-nullable": true
         },
         "thumbnail": {
-          "type": "string"
+          "type": "string",
+          "x-nullable": true
         }
       },
       "required": [
         "id",
-        "title",
-        "content",
-        "thumbnail"
+        "title"
+      ]
+    },
+    "flexible_blog": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "integer"
+        },
+        "headline": {
+          "type": "string"
+        },
+        "text": {
+          "type": "string",
+          "nullable": true
+        },
+        "thumbnail": {
+          "type": "string",
+          "nullable": true
+        }
+      },
+      "required": [
+        "id",
+        "headline"
       ]
     }
   },