diff --git a/README.md b/README.md
index d2e8b27c..ef6f97f7 100644
--- a/README.md
+++ b/README.md
@@ -15,12 +15,12 @@
 
 - Parses Swagger specs in **JSON** or **YAML** format
 - Validates against the [Swagger 2.0 schema](https://github.com/OAI/OpenAPI-Specification/blob/master/schemas/v2.0/schema.json) or [OpenAPI 3.0 Schema](https://github.com/OAI/OpenAPI-Specification/blob/master/schemas/v3.0/schema.json)
-- [Resolves](https://apidevtools.com/swagger-parser/docs/swagger-parser.html#resolveapi-options-callback) all `$ref` pointers, including external files and URLs
-- Can [bundle](https://apidevtools.com/swagger-parser/docs/swagger-parser.html#bundleapi-options-callback) all your Swagger files into a single file that only has _internal_ `$ref` pointers
-- Can [dereference](https://apidevtools.com/swagger-parser/docs/swagger-parser.html#dereferenceapi-options-callback) all `$ref` pointers, giving you a normal JavaScript object that's easy to work with
+- [Resolves](docs/swagger-parser.md#resolveapi-options-callback) all `$ref` pointers, including external files and URLs
+- Can [bundle](docs/swagger-parser.md#bundleapi-options-callback) all your Swagger files into a single file that only has _internal_ `$ref` pointers
+- Can [dereference](docs/swagger-parser.md#dereferenceapi-options-callback) all `$ref` pointers, giving you a normal JavaScript object that's easy to work with
 - **[Tested](https://github.com/APIDevTools/swagger-parser/actions)** in Node.js and all modern web browsers on Mac, Windows, and Linux
 - Tested on **[over 1,500 real-world APIs](https://apis.guru/browse-apis/)** from Google, Microsoft, Facebook, Spotify, etc.
-- Supports [circular references](https://apidevtools.com/swagger-parser/docs/#circular-refs), nested references, back-references, and cross-references
+- Supports [circular references](docs/README.md#circular-refs), nested references, back-references, and cross-references
 - Maintains object reference equality — `$ref` pointers to the same value always resolve to the same object instance
 
 ## Related Projects
@@ -51,7 +51,7 @@ try {
 }
 ```
 
-For more detailed examples, please see the [API Documentation](https://apidevtools.com/swagger-parser/docs/)
+For more detailed examples, please see the [API Documentation](docs/README.md).
 
 ## Installation
 
@@ -83,7 +83,7 @@ To use Swagger Parser in a browser, you'll need to use a bundling tool such as [
 
 ## API Documentation
 
-Full API documentation is available [right here](https://apidevtools.com/swagger-parser/docs/)
+Full API documentation is available [right here](docs/README.md).
 
 ## Security
 
diff --git a/test/specs/xquik/xquik-openapi.yaml b/test/specs/xquik/xquik-openapi.yaml
new file mode 100644
index 00000000..76058b99
--- /dev/null
+++ b/test/specs/xquik/xquik-openapi.yaml
@@ -0,0 +1,90 @@
+openapi: 3.1.0
+info:
+  title: Xquik API
+  version: "1.0"
+servers:
+  - url: https://xquik.com
+paths:
+  /api/v1/x/tweets/search:
+    get:
+      operationId: searchTweets
+      parameters:
+        - name: q
+          in: query
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          description: Search results.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/PaginatedTweets"
+      security:
+        - apiKey: []
+components:
+  securitySchemes:
+    apiKey:
+      type: apiKey
+      in: header
+      name: x-api-key
+  schemas:
+    PaginatedTweets:
+      type: object
+      required:
+        - tweets
+        - has_next_page
+        - next_cursor
+      properties:
+        tweets:
+          type: array
+          items:
+            $ref: "#/components/schemas/Tweet"
+        has_next_page:
+          type: boolean
+        next_cursor:
+          type: string
+    Tweet:
+      type: object
+      required:
+        - id
+        - text
+        - retweetCount
+        - replyCount
+        - likeCount
+        - quoteCount
+        - viewCount
+        - bookmarkCount
+      properties:
+        id:
+          type: string
+        text:
+          type: string
+        retweetCount:
+          type: integer
+        replyCount:
+          type: integer
+        likeCount:
+          type: integer
+        quoteCount:
+          type: integer
+        viewCount:
+          type: integer
+        bookmarkCount:
+          type: integer
+        author:
+          $ref: "#/components/schemas/UserProfile"
+    UserProfile:
+      type: object
+      required:
+        - id
+        - username
+        - name
+      properties:
+        id:
+          type: string
+        username:
+          type: string
+        name:
+          type: string
diff --git a/test/specs/xquik/xquik.spec.js b/test/specs/xquik/xquik.spec.js
new file mode 100644
index 00000000..1c547b62
--- /dev/null
+++ b/test/specs/xquik/xquik.spec.js
@@ -0,0 +1,30 @@
+"use strict";
+
+const { expect } = require("chai");
+const SwaggerParser = require("../../..");
+const path = require("../../utils/path");
+
+describe("Xquik OpenAPI 3.1 fixture", () => {
+  it("validates the search endpoint and API key security scheme", async () => {
+    const api = await SwaggerParser.validate(path.rel("specs/xquik/xquik-openapi.yaml"));
+    const operation = api.paths["/api/v1/x/tweets/search"].get;
+    const responseSchema = operation.responses["200"].content["application/json"].schema;
+    const scheme = api.components.securitySchemes.apiKey;
+
+    expect(api.openapi).to.equal("3.1.0");
+    expect(api.info.title).to.equal("Xquik API");
+    expect(operation.operationId).to.equal("searchTweets");
+    expect(operation.responses["200"].description).to.equal("Search results.");
+    expect(responseSchema.required).to.deep.equal(["tweets", "has_next_page", "next_cursor"]);
+    expect(responseSchema.properties.tweets.items.required).to.include.members([
+      "id",
+      "text",
+      "likeCount",
+      "viewCount",
+    ]);
+    expect(responseSchema.properties.tweets.items.properties.author.required).to.deep.equal(["id", "username", "name"]);
+    expect(scheme.type).to.equal("apiKey");
+    expect(scheme.in).to.equal("header");
+    expect(scheme.name).to.equal("x-api-key");
+  });
+});