diff --git a/src/services/MenuBuilder.ts b/src/services/MenuBuilder.ts
index aaf81a248..e33bfa11d 100644
--- a/src/services/MenuBuilder.ts
+++ b/src/services/MenuBuilder.ts
@@ -1,5 +1,5 @@
 import type { OpenAPIPaths, OpenAPITag, OpenAPISchema } from '../types';
-import { isOperationName, JsonPointer, alphabeticallyByProp } from '../utils';
+import { getPathOperations, JsonPointer, alphabeticallyByProp } from '../utils';
 import { MarkdownRenderer } from './MarkdownRenderer';
 import { GroupModel, OperationModel } from './models';
 import type { OpenAPIParser } from './OpenAPIParser';
@@ -224,14 +224,14 @@ export class MenuBuilder {
     function getTags(parser: OpenAPIParser, paths: OpenAPIPaths, isWebhook?: boolean) {
       for (const pathName of Object.keys(paths)) {
         const path = paths[pathName];
-        const operations = Object.keys(path).filter(isOperationName);
-        for (const operationName of operations) {
-          const operationInfo = path[operationName];
-          if (path.$ref) {
-            const { resolved: resolvedPaths } = parser.deref<OpenAPIPaths>(path as OpenAPIPaths);
-            getTags(parser, { [pathName]: resolvedPaths }, isWebhook);
-            continue;
-          }
+        if (path.$ref) {
+          const { resolved: resolvedPaths } = parser.deref<OpenAPIPaths>(path as OpenAPIPaths);
+          getTags(parser, { [pathName]: resolvedPaths }, isWebhook);
+          continue;
+        }
+        for (const { operationName, operation: operationInfo, pointerPath } of getPathOperations(
+          path,
+        )) {
           let operationTags = operationInfo?.tags;
 
           if (!operationTags || !operationTags.length) {
@@ -254,7 +254,7 @@ export class MenuBuilder {
             tag.operations.push({
               ...operationInfo,
               pathName,
-              pointer: JsonPointer.compile(['paths', pathName, operationName]),
+              pointer: JsonPointer.compile(['paths', pathName, ...pointerPath]),
               httpVerb: operationName,
               pathParameters: path.parameters || [],
               pathServers: path.servers,
diff --git a/src/services/__tests__/models/MenuBuilder.test.ts b/src/services/__tests__/models/MenuBuilder.test.ts
index 7deb3ef32..955f252c1 100644
--- a/src/services/__tests__/models/MenuBuilder.test.ts
+++ b/src/services/__tests__/models/MenuBuilder.test.ts
@@ -2,6 +2,7 @@
 import { MenuBuilder } from '../../MenuBuilder';
 import { OpenAPIParser } from '../../OpenAPIParser';
 
+import { OperationModel } from '../../models/Operation';
 import { RedocNormalizedOptions } from '../../RedocNormalizedOptions';
 
 const opts = new RedocNormalizedOptions({});
@@ -20,5 +21,81 @@ describe('Models', () => {
       expect(contentItems[0].name).toEqual('pet');
       expect(contentItems[0].type).toEqual('tag');
     });
+
+    test('should include OpenAPI 3.2 additionalOperations with arbitrary custom methods', () => {
+      parser = new OpenAPIParser(
+        {
+          openapi: '3.2.0',
+          info: {
+            title: 'Additional operations',
+            version: '1.0.0',
+          },
+          paths: {
+            '/participants': {
+              get: {
+                tags: ['participants'],
+                summary: 'List participants with query parameters',
+                responses: {
+                  '200': {
+                    description: 'OK',
+                  },
+                },
+              },
+              additionalOperations: {
+                LIST: {
+                  tags: ['participants'],
+                  summary: 'List participants with request body',
+                  requestBody: {
+                    content: {
+                      'application/json': {
+                        schema: {
+                          type: 'object',
+                        },
+                      },
+                    },
+                  },
+                  responses: {
+                    '200': {
+                      description: 'OK',
+                    },
+                  },
+                },
+                COPY: {
+                  tags: ['participants'],
+                  summary: 'Copy participants with request body',
+                  requestBody: {
+                    content: {
+                      'application/json': {
+                        schema: {
+                          type: 'object',
+                        },
+                      },
+                    },
+                  },
+                  responses: {
+                    '200': {
+                      description: 'OK',
+                    },
+                  },
+                },
+              },
+            },
+          },
+        },
+        undefined,
+        opts,
+      );
+
+      const contentItems = MenuBuilder.buildStructure(parser, opts);
+      const operations = contentItems[0].items as OperationModel[];
+      expect(contentItems).toHaveLength(1);
+      expect(operations).toHaveLength(3);
+      expect(operations.map(item => item.httpVerb)).toEqual(['get', 'LIST', 'COPY']);
+      expect(operations.map(item => item.name)).toEqual([
+        'List participants with query parameters',
+        'List participants with request body',
+        'Copy participants with request body',
+      ]);
+    });
   });
 });
diff --git a/src/services/models/Callback.ts b/src/services/models/Callback.ts
index 49583a290..44a1ec942 100644
--- a/src/services/models/Callback.ts
+++ b/src/services/models/Callback.ts
@@ -1,6 +1,6 @@
 import { action, observable, makeObservable } from 'mobx';
 
-import { isOperationName, JsonPointer } from '../../utils';
+import { getPathOperations, JsonPointer } from '../../utils';
 import { OperationModel } from './Operation';
 import type { OpenAPIParser } from '../OpenAPIParser';
 import type { OpenAPICallback, Referenced } from '../../types';
@@ -27,19 +27,19 @@ export class CallbackModel {
 
     for (const pathName of Object.keys(paths)) {
       const path = paths[pathName];
-      const operations = Object.keys(path).filter(isOperationName);
-      for (const operationName of operations) {
-        const operationInfo = path[operationName];
-
+      for (const { operationName, operation: operationInfo, pointerPath } of getPathOperations(
+        path,
+      )) {
         const operation = new OperationModel(
           parser,
           {
             ...operationInfo,
             pathName,
-            pointer: JsonPointer.compile([pointer, name, pathName, operationName]),
+            pointer: JsonPointer.compile([pointer, name, pathName, ...pointerPath]),
             httpVerb: operationName,
             pathParameters: path.parameters || [],
             pathServers: path.servers,
+            isWebhook: false,
           },
           undefined,
           options,
diff --git a/src/services/models/Webhook.ts b/src/services/models/Webhook.ts
index 888c8a665..f2ac06bea 100644
--- a/src/services/models/Webhook.ts
+++ b/src/services/models/Webhook.ts
@@ -2,7 +2,7 @@ import type { OpenAPIPath, Referenced } from '../../types';
 import type { OpenAPIParser } from '../OpenAPIParser';
 import { OperationModel } from './Operation';
 import type { RedocNormalizedOptions } from '../RedocNormalizedOptions';
-import { isOperationName } from '../..';
+import { getPathOperations, JsonPointer } from '../..';
 
 export class WebhookModel {
   operations: OperationModel[] = [];
@@ -19,20 +19,25 @@ export class WebhookModel {
   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 (const operationName of operations) {
-        const operationInfo = webhook[operationName];
-        if (webhook.$ref) {
-          const resolvedWebhook = parser.deref<OpenAPIPath>(webhook || {});
-          this.initWebhooks(parser, { [operationName]: resolvedWebhook }, options);
-        }
+      if (webhook.$ref) {
+        const resolvedWebhook = parser.deref<OpenAPIPath>(webhook || {});
+        this.initWebhooks(parser, { [webhookName]: resolvedWebhook }, options);
+        continue;
+      }
 
-        if (!operationInfo) continue;
+      for (const { operationName, operation: operationInfo, pointerPath } of getPathOperations(
+        webhook,
+      )) {
         const operation = new OperationModel(
           parser,
           {
             ...operationInfo,
+            pathName: webhookName,
+            pointer: JsonPointer.compile(['webhooks', webhookName, ...pointerPath]),
             httpVerb: operationName,
+            pathParameters: webhook.parameters || [],
+            pathServers: webhook.servers,
+            isWebhook: true,
           },
           undefined,
           options,
diff --git a/src/types/open-api.ts b/src/types/open-api.ts
index 648d98e42..42530b00b 100644
--- a/src/types/open-api.ts
+++ b/src/types/open-api.ts
@@ -59,6 +59,8 @@ export interface OpenAPIPath {
   head?: OpenAPIOperation;
   patch?: OpenAPIOperation;
   trace?: OpenAPIOperation;
+  query?: OpenAPIOperation;
+  additionalOperations?: Record<string, OpenAPIOperation>;
   servers?: OpenAPIServer[];
   parameters?: Array<Referenced<OpenAPIParameter>>;
   $ref?: string;
diff --git a/src/utils/__tests__/openapi.test.ts b/src/utils/__tests__/openapi.test.ts
index 5249403cf..708066395 100644
--- a/src/utils/__tests__/openapi.test.ts
+++ b/src/utils/__tests__/openapi.test.ts
@@ -63,12 +63,16 @@ describe('Utils', () => {
       expect(isOperationName('patch')).toEqual(true);
       expect(isOperationName('delete')).toEqual(true);
       expect(isOperationName('options')).toEqual(true);
+      expect(isOperationName('trace')).toEqual(true);
+      expect(isOperationName('query')).toEqual(true);
     });
 
     it('Should return `false` for incorrect HTTP verbs', () => {
       expect(isOperationName('properties')).toEqual(false);
       expect(isOperationName('x-name')).toEqual(false);
       expect(isOperationName('fix')).toEqual(false);
+      expect(isOperationName('list')).toEqual(false);
+      expect(isOperationName('copy')).toEqual(false);
     });
   });
 
diff --git a/src/utils/openapi.ts b/src/utils/openapi.ts
index 15e04a43d..b07d12719 100644
--- a/src/utils/openapi.ts
+++ b/src/utils/openapi.ts
@@ -7,7 +7,9 @@ import { OpenAPIParser } from '../services/OpenAPIParser';
 import {
   OpenAPIEncoding,
   OpenAPIMediaType,
+  OpenAPIOperation,
   OpenAPIParameter,
+  OpenAPIPath,
   OpenAPIParameterStyle,
   OpenAPIRequestBody,
   OpenAPIResponse,
@@ -58,13 +60,44 @@ const operationNames = {
   patch: true,
   delete: true,
   options: true,
-  $ref: true,
+  trace: true,
+  query: true,
 };
 
 export function isOperationName(key: string): boolean {
   return key in operationNames;
 }
 
+export interface PathOperation {
+  operationName: string;
+  operation: OpenAPIOperation;
+  pointerPath: string[];
+}
+
+export function getPathOperations(path: OpenAPIPath): PathOperation[] {
+  const operations = Object.keys(path)
+    .filter(isOperationName)
+    .map(operationName => ({
+      operationName,
+      operation: path[operationName],
+      pointerPath: [operationName],
+    }));
+
+  for (const operationName of Object.keys(path.additionalOperations || {})) {
+    if (isOperationName(operationName.toLowerCase())) {
+      continue;
+    }
+
+    operations.push({
+      operationName,
+      operation: path.additionalOperations![operationName],
+      pointerPath: ['additionalOperations', operationName],
+    });
+  }
+
+  return operations.filter(({ operation }) => !!operation);
+}
+
 export function getOperationSummary(operation: ExtendedOpenAPIOperation): string {
   return (
     operation.summary ||