diff --git a/demo/openapi.yaml b/demo/openapi.yaml
index 74c16b70f2..e486189008 100644
--- a/demo/openapi.yaml
+++ b/demo/openapi.yaml
@@ -1,4 +1,4 @@
-openapi: 3.0.0
+openapi: 3.1.0
 servers:
   - url: //petstore.swagger.io/v2
     description: Default server
@@ -42,6 +42,7 @@ info:
 
   version: 1.0.0
   title: Swagger Petstore
+  summary: My lovely API
   termsOfService: 'http://swagger.io/terms/'
   contact:
     name: API Support
@@ -53,6 +54,7 @@ info:
   license:
     name: Apache 2.0
     url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
+    identifier: Apache 2.0
 externalDocs:
   description: Find out how to create Github repo for your OpenAPI spec.
   url: 'https://github.com/Rebilly/generator-openapi-repo'
@@ -893,6 +895,38 @@ paths:
         default:
           description: successful operation
 components:
+  pathItems:
+    catsWebhook:
+      put:
+        summary: Get a cat details after update
+        description: Get a cat details after update
+        operationId: updatedCat
+        tags:
+          - pet
+        requestBody:
+          description: Information about cat in the system
+          content:
+            multipart/form-data:
+              schema:
+                $ref: "#/components/schemas/Cat"
+        responses:
+          '200':
+            description: update Cat details
+      post:
+        summary: Create new cat
+        description: Info about new cat
+        operationId: createdCat
+        tags:
+          - pet
+        requestBody:
+          description: Information about cat in the system
+          content:
+            multipart/form-data:
+              schema:
+                $ref: "#/components/schemas/Cat"
+        responses:
+          '200':
+            description: create Cat details
   schemas:
     ApiResponse:
       type: object
@@ -1040,7 +1074,8 @@ components:
           example: Guru
         photoUrls:
           description: The list of URL to a cute photos featuring pet
-          type: array
+          type: [string, integer, 'null', array]
+          minItems: 1
           maxItems: 20
           xml:
             name: photoUrl
@@ -1054,7 +1089,8 @@ components:
         tags:
           description: Tags attached to the pet
           type: array
-          minItems: 1
+          exclusiveMaximum: 100
+          exclusiveMinimum: 0
           xml:
             name: tag
             wrapped: true
@@ -1067,6 +1103,7 @@ components:
             - available
             - pending
             - sold
+          default: pending
         petType:
           description: Type of a pet
           type: string
@@ -1187,13 +1224,13 @@ components:
         shipDate: '2018-10-19T16:46:45Z'
         status: placed
         complete: false
-x-webhooks:
+webhooks:
   newPet:
     post:
       summary: New pet
       description: Information about a new pet in the systems
       operationId: newPet
-      tags: 
+      tags:
         - pet
       requestBody:
         content:
@@ -1202,4 +1239,8 @@ x-webhooks:
               $ref: "#/components/schemas/Pet"
       responses:
         "200":
-          description: Return a 200 status to indicate that the data was received successfully
\ No newline at end of file
+          description: Return a 200 status to indicate that the data was received successfully
+  myWebhook:
+    $ref: '#/components/pathItems/catsWebhook'
+    description: Overriding description
+    summary: Overriding summary
\ No newline at end of file
diff --git a/e2e/integration/menu.e2e.ts b/e2e/integration/menu.e2e.ts
index e1b053d125..41ecd79cea 100644
--- a/e2e/integration/menu.e2e.ts
+++ b/e2e/integration/menu.e2e.ts
@@ -6,7 +6,7 @@ describe('Menu', () => {
   it('should have valid items count', () => {
     cy.get('.menu-content')
       .find('li')
-      .should('have.length', 34);
+      .should('have.length', 36);
   });
 
   it('should sync active menu items while scroll', () => {
diff --git a/src/components/Fields/FieldDetails.tsx b/src/components/Fields/FieldDetails.tsx
index be102622ca..9ac6cea235 100644
--- a/src/components/Fields/FieldDetails.tsx
+++ b/src/components/Fields/FieldDetails.tsx
@@ -110,7 +110,7 @@ export class FieldDetails extends React.PureComponent<FieldProps, { patternShown
           <ExternalDocumentation externalDocs={schema.externalDocs} compact={true} />
         )}
         {(renderDiscriminatorSwitch && renderDiscriminatorSwitch(this.props)) || null}
-        {field.const && (<FieldDetail label={'Value:'} value={field.const}/>) || null}
+        {field.const && (<FieldDetail label={l('const') + ':'} value={field.const}/>) || null}
       </div>
     );
   }
diff --git a/src/services/MenuBuilder.ts b/src/services/MenuBuilder.ts
index 7a750d65d8..7322dab00d 100644
--- a/src/services/MenuBuilder.ts
+++ b/src/services/MenuBuilder.ts
@@ -6,7 +6,6 @@ import {
   Referenced,
   OpenAPIServer,
   OpenAPIPaths,
-  OpenAPIPath,
 } from '../types';
 import {
   isOperationName,
@@ -235,12 +234,11 @@ export class MenuBuilder {
       for (const pathName of Object.keys(paths)) {
         const path = paths[pathName];
         const operations = Object.keys(path).filter(isOperationName);
-        for (let operationName of operations) {
-          let operationInfo = path[operationName];
+        for (const operationName of operations) {
+          const operationInfo = path[operationName];
           if (path.$ref) {
-            const resolvedPath = parser.deref<OpenAPIPath>(path || {})
-            operationName = Object.keys(resolvedPath)[0]
-            operationInfo = resolvedPath[operationName]
+            const resolvedPaths = parser.deref<OpenAPIPaths>(path as OpenAPIPaths);
+            getTags(parser, { [operationName]: resolvedPaths }, isWebhook);
           }
           let operationTags = operationInfo?.tags;
 
diff --git a/src/services/__tests__/fixtures/3.1/pathItems.json b/src/services/__tests__/fixtures/3.1/pathItems.json
new file mode 100644
index 0000000000..87888a1b91
--- /dev/null
+++ b/src/services/__tests__/fixtures/3.1/pathItems.json
@@ -0,0 +1,66 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "version": "1.0.0",
+    "title": "Swagger Petstore"
+  },
+  "webhooks": {
+    "myWebhook": {
+      "$ref": "#/components/pathItems/catsWebhook",
+      "description": "Overriding description",
+      "summary": "Overriding summary"
+    }
+  },
+  "components": {
+    "pathItems": {
+      "catsWebhook": {
+        "put": {
+          "summary": "Get a cat details after update",
+          "description": "Get a cat details after update",
+          "operationId": "updatedCat",
+          "tags": [
+            "pet"
+          ],
+          "requestBody": {
+            "description": "Information about cat in the system",
+            "content": {
+              "multipart/form-data": {
+                "schema": {
+                  "$ref": "#/components/schemas/Pet"
+                }
+              }
+            }
+          },
+          "responses": {
+            "200": {
+              "description": "update Cat details"
+            }
+          }
+        },
+        "post": {
+          "summary": "Create new cat",
+          "description": "Info about new cat",
+          "operationId": "createdCat",
+          "tags": [
+            "pet"
+          ],
+          "requestBody": {
+            "description": "Information about cat in the system",
+            "content": {
+              "multipart/form-data": {
+                "schema": {
+                  "$ref": "#/components/schemas/Pet"
+                }
+              }
+            }
+          },
+          "responses": {
+            "200": {
+              "description": "create Cat details"
+            }
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/services/__tests__/models/ApiInfo.test.ts b/src/services/__tests__/models/ApiInfo.test.ts
index 457937ecfd..5db4252751 100644
--- a/src/services/__tests__/models/ApiInfo.test.ts
+++ b/src/services/__tests__/models/ApiInfo.test.ts
@@ -46,5 +46,21 @@ describe('Models', () => {
       const info = new ApiInfoModel(parser);
       expect(info.summary).toEqual('Test summary\nsome text\n## Heading\n test');
     });
+
+    test('should correctly populate license identifier', () => {
+      parser.spec = {
+        openapi: '3.1.0',
+        info: {
+          license: {
+            name: 'MIT',
+            identifier: 'MIT',
+            url: 'https://opensource.org/licenses/MIT'
+          }
+        },
+      } as any;
+
+      const { license = { identifier: null } } = new ApiInfoModel(parser);
+      expect(license.identifier).toEqual('MIT');
+    });
   });
 });
diff --git a/src/services/__tests__/models/MenuBuilder.test.ts b/src/services/__tests__/models/MenuBuilder.test.ts
new file mode 100644
index 0000000000..a6ab4776c7
--- /dev/null
+++ b/src/services/__tests__/models/MenuBuilder.test.ts
@@ -0,0 +1,25 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+import { MenuBuilder } from '../../MenuBuilder';
+import { OpenAPIParser } from '../../OpenAPIParser';
+
+import { RedocNormalizedOptions } from '../../RedocNormalizedOptions';
+
+const opts = new RedocNormalizedOptions({});
+
+describe('Models', () => {
+  describe('MenuBuilder', () => {
+    let parser;
+
+    test('discriminator with one field', () => {
+      const spec = require('../fixtures/3.1/pathItems.json');
+      parser = new OpenAPIParser(spec, undefined, opts);
+      const contentItems = MenuBuilder.buildStructure(parser, opts);
+      expect(contentItems).toHaveLength(2);
+      expect(contentItems[0].items).toHaveLength(2);
+      expect(contentItems[0].id).toEqual('tag/pet');
+      expect(contentItems[0].name).toEqual('pet');
+      expect(contentItems[0].type).toEqual('tag');
+
+    });
+  });
+});
diff --git a/src/services/models/Webhook.ts b/src/services/models/Webhook.ts
index a1be7d3911..5512293518 100644
--- a/src/services/models/Webhook.ts
+++ b/src/services/models/Webhook.ts
@@ -14,16 +14,18 @@ export class WebhookModel {
   ) {
     const webhooks = parser.deref<OpenAPIPath>(infoOrRef || {});
     parser.exitRef(infoOrRef);
+    this.initWebhooks(parser, webhooks, options);
+  }
 
+  initWebhooks(parser: OpenAPIParser, webhooks: OpenAPIPath, options: RedocNormalizedOptions) {
     for (const webhookName of Object.keys(webhooks)) {
       const webhook = webhooks[webhookName];
       const operations = Object.keys(webhook).filter(isOperationName);
-      for (let operationName of operations) {
-        let operationInfo = webhook[operationName];
+      for (const operationName of operations) {
+        const operationInfo = webhook[operationName];
         if (webhook.$ref) {
           const resolvedWebhook = parser.deref<OpenAPIPath>(webhook || {});
-          operationName = Object.keys(resolvedWebhook)[0];
-          operationInfo = resolvedWebhook[operationName];
+          this.initWebhooks(parser, { [operationName]: resolvedWebhook }, options);
         }
 
         if (!operationInfo) continue;
diff --git a/src/utils/__tests__/__snapshots__/loadAndBundleSpec.test.ts.snap b/src/utils/__tests__/__snapshots__/loadAndBundleSpec.test.ts.snap
index e7c967e6e8..ebf6792ded 100644
--- a/src/utils/__tests__/__snapshots__/loadAndBundleSpec.test.ts.snap
+++ b/src/utils/__tests__/__snapshots__/loadAndBundleSpec.test.ts.snap
@@ -13,6 +13,56 @@ Object {
         },
       },
     },
+    "pathItems": Object {
+      "catsWebhook": Object {
+        "post": Object {
+          "description": "Info about new cat",
+          "operationId": "createdCat",
+          "requestBody": Object {
+            "content": Object {
+              "multipart/form-data": Object {
+                "schema": Object {
+                  "$ref": "#/components/schemas/Cat",
+                },
+              },
+            },
+            "description": "Information about cat in the system",
+          },
+          "responses": Object {
+            "200": Object {
+              "description": "create Cat details",
+            },
+          },
+          "summary": "Create new cat",
+          "tags": Array [
+            "pet",
+          ],
+        },
+        "put": Object {
+          "description": "Get a cat details after update",
+          "operationId": "updatedCat",
+          "requestBody": Object {
+            "content": Object {
+              "multipart/form-data": Object {
+                "schema": Object {
+                  "$ref": "#/components/schemas/Cat",
+                },
+              },
+            },
+            "description": "Information about cat in the system",
+          },
+          "responses": Object {
+            "200": Object {
+              "description": "update Cat details",
+            },
+          },
+          "summary": "Get a cat details after update",
+          "tags": Array [
+            "pet",
+          ],
+        },
+      },
+    },
     "requestBodies": Object {
       "Pet": Object {
         "content": Object {
@@ -292,13 +342,20 @@ Object {
               "type": "string",
             },
             "maxItems": 20,
-            "type": "array",
+            "minItems": 1,
+            "type": Array [
+              "string",
+              "integer",
+              "null",
+              "array",
+            ],
             "xml": Object {
               "name": "photoUrl",
               "wrapped": true,
             },
           },
           "status": Object {
+            "default": "pending",
             "description": "Pet status in the store",
             "enum": Array [
               "available",
@@ -309,10 +366,11 @@ Object {
           },
           "tags": Object {
             "description": "Tags attached to the pet",
+            "exclusiveMaximum": 100,
+            "exclusiveMinimum": 0,
             "items": Object {
               "$ref": "#/components/schemas/Tag",
             },
-            "minItems": 1,
             "type": "array",
             "xml": Object {
               "name": "tag",
@@ -485,9 +543,11 @@ and standard method from web, mobile and desktop applications.
 <SecurityDefinitions />
 ",
     "license": Object {
+      "identifier": "Apache 2.0",
       "name": "Apache 2.0",
       "url": "http://www.apache.org/licenses/LICENSE-2.0.html",
     },
+    "summary": "My lovely API",
     "termsOfService": "http://swagger.io/terms/",
     "title": "Swagger Petstore",
     "version": "1.0.0",
@@ -496,7 +556,7 @@ and standard method from web, mobile and desktop applications.
       "url": "https://redocly.github.io/redoc/petstore-logo.png",
     },
   },
-  "openapi": "3.0.0",
+  "openapi": "3.1.0",
   "paths": Object {
     "/pet": Object {
       "parameters": Array [
@@ -1745,29 +1805,12 @@ culpa qui officia deserunt mollit anim id est laborum.
       "x-displayName": "The Order Model",
     },
   ],
-  "x-tagGroups": Array [
-    Object {
-      "name": "General",
-      "tags": Array [
-        "pet",
-        "store",
-      ],
-    },
-    Object {
-      "name": "User Management",
-      "tags": Array [
-        "user",
-      ],
+  "webhooks": Object {
+    "myWebhook": Object {
+      "$ref": "#/components/pathItems/catsWebhook",
+      "description": "Overriding description",
+      "summary": "Overriding summary",
     },
-    Object {
-      "name": "Models",
-      "tags": Array [
-        "pet_model",
-        "store_model",
-      ],
-    },
-  ],
-  "x-webhooks": Object {
     "newPet": Object {
       "post": Object {
         "description": "Information about a new pet in the systems",
@@ -1793,6 +1836,28 @@ culpa qui officia deserunt mollit anim id est laborum.
       },
     },
   },
+  "x-tagGroups": Array [
+    Object {
+      "name": "General",
+      "tags": Array [
+        "pet",
+        "store",
+      ],
+    },
+    Object {
+      "name": "User Management",
+      "tags": Array [
+        "user",
+      ],
+    },
+    Object {
+      "name": "Models",
+      "tags": Array [
+        "pet_model",
+        "store_model",
+      ],
+    },
+  ],
 }
 `;