diff --git a/utils/rdflib/CHANGELOG.md b/utils/rdflib/CHANGELOG.md
index b6e349e..c6a7a56 100644
--- a/utils/rdflib/CHANGELOG.md
+++ b/utils/rdflib/CHANGELOG.md
@@ -6,9 +6,18 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- [mockTurtleDocument](https://solid-contrib.github.io/data-modules/rdflib-utils/functions/test_support.mockTurtleDocument.html)
+  now allows to pass additional headers to include into the mock response
+- [mockLdpContainer](https://solid-contrib.github.io/data-modules/rdflib-utils/functions/test_support.mockLdpContainer.html)
+  now allows to pass additional headers to include into the mock response
+
 ## 0.5.0
 
-### Changes
+### Changed
 
 - [mockLdpContainer](https://solid-contrib.github.io/data-modules/rdflib-utils/functions/test_support.mockLdpContainer.html)
   now allows to add additional turtle to include into the mock response
diff --git a/utils/rdflib/src/test-support/mockResponses.spec.ts b/utils/rdflib/src/test-support/mockResponses.spec.ts
index 7d28ad8..71dd742 100644
--- a/utils/rdflib/src/test-support/mockResponses.spec.ts
+++ b/utils/rdflib/src/test-support/mockResponses.spec.ts
@@ -1,7 +1,52 @@
-import { mockLdpContainer } from "./mockResponses";
+import { mockLdpContainer, mockTurtleDocument } from "./mockResponses";
 
 describe("mockResponses", () => {
-  describe("mockLdpContainer", () => {
+  describe(mockTurtleDocument.name, () => {
+    it("mocks a turtle document body", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+      );
+      const result = await fetch("http://document.test/", {});
+      expect(await result.text()).toEqual('<> <> "Some content" .');
+    });
+
+    it("mocks standard turtle document headers", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+      );
+      const result: Response = await fetch("http://document.test/", {});
+      expect(result.headers.get("Content-Type")).toEqual("text/turtle");
+      expect(result.headers.get("Link")).toEqual(
+        '<http://www.w3.org/ns/ldp#Resource>; rel="type"',
+      );
+      expect(result.headers.get("Wac-Allow")).toEqual(
+        'user="read write append control",public="read"',
+      );
+      expect(result.headers.get("Accept-Patch")).toEqual("text/n3");
+    });
+
+    it("mocks additional headers as provided", async () => {
+      const fetch = jest.fn();
+      mockTurtleDocument(
+        fetch,
+        "http://document.test/",
+        `<> <> "Some content" .`,
+        {
+          "X-My-Header": "MyValue",
+        },
+      );
+      const result: Response = await fetch("http://document.test/", {});
+      expect(result.headers.get("X-My-Header")).toEqual("MyValue");
+    });
+  });
+
+  describe(mockLdpContainer.name, () => {
     it("mocks a container without contents", async () => {
       const fetch = jest.fn();
       mockLdpContainer(fetch, "http://container.test/");
@@ -54,5 +99,28 @@ describe("mockResponses", () => {
       .
       <http://container.test/one> a ldp:Container .`);
     });
+
+    it("mocks standard ldp container headers", async () => {
+      const fetch = jest.fn();
+      mockLdpContainer(fetch, "http://container.test/");
+      const result: Response = await fetch("http://container.test/", {});
+      expect(result.headers.get("Content-Type")).toEqual("text/turtle");
+      expect(result.headers.get("Link")).toEqual(
+        '<http://www.w3.org/ns/ldp#Container>; rel="type"',
+      );
+      expect(result.headers.get("Wac-Allow")).toEqual(
+        'user="read write append control",public="read"',
+      );
+      expect(result.headers.get("Accept-Patch")).toEqual("text/n3");
+    });
+
+    it("mocks additional headers as provided", async () => {
+      const fetch = jest.fn();
+      mockLdpContainer(fetch, "http://document.test/", undefined, undefined, {
+        "X-My-Header": "MyValue",
+      });
+      const result: Response = await fetch("http://document.test/", {});
+      expect(result.headers.get("X-My-Header")).toEqual("MyValue");
+    });
   });
 });
diff --git a/utils/rdflib/src/test-support/mockResponses.ts b/utils/rdflib/src/test-support/mockResponses.ts
index fe6ac4e..96012d9 100644
--- a/utils/rdflib/src/test-support/mockResponses.ts
+++ b/utils/rdflib/src/test-support/mockResponses.ts
@@ -5,8 +5,14 @@ import { when } from "jest-when";
  * @param fetch - A mocked fetch function
  * @param url - The URL to mock
  * @param ttl - The mocked turtle file content
+ * @param additionalHeaders - Additional headers to include in the response
  */
-export function mockTurtleDocument(fetch: jest.Mock, url: string, ttl: string) {
+export function mockTurtleDocument(
+  fetch: jest.Mock,
+  url: string,
+  ttl: string,
+  additionalHeaders: Record<string, string> = {},
+) {
   when(fetch)
     .calledWith(url, expect.anything())
     .mockResolvedValue({
@@ -18,6 +24,7 @@ export function mockTurtleDocument(fetch: jest.Mock, url: string, ttl: string) {
         link: '<http://www.w3.org/ns/ldp#Resource>; rel="type"',
         "wac-allow": 'user="read write append control",public="read"',
         "accept-patch": "text/n3",
+        ...additionalHeaders,
       }),
       text: () => Promise.resolve(ttl),
     } as Response);
@@ -29,12 +36,14 @@ export function mockTurtleDocument(fetch: jest.Mock, url: string, ttl: string) {
  * @param url - The URL to mock
  * @param contains - List of URLs of documents contained in this container
  * @param moreTurtle - Additional turtle to include into the response
+ * @param additionalHeaders - Additional headers to include in the response
  */
 export function mockLdpContainer(
   fetch: jest.Mock,
   url: string,
   contains: string[] = [],
   moreTurtle: string = "",
+  additionalHeaders: Record<string, string> = {},
 ) {
   when(fetch)
     .calledWith(url, expect.anything())
@@ -47,6 +56,7 @@ export function mockLdpContainer(
         link: '<http://www.w3.org/ns/ldp#Container>; rel="type"',
         "wac-allow": 'user="read write append control",public="read"',
         "accept-patch": "text/n3",
+        ...additionalHeaders,
       }),
       text: () =>
         Promise.resolve(`