diff --git a/GraphQLUpload.test.mjs b/GraphQLUpload.test.mjs
index e738bc2..257921d 100644
--- a/GraphQLUpload.test.mjs
+++ b/GraphQLUpload.test.mjs
@@ -1,7 +1,7 @@
 // @ts-check
 
-import { doesNotThrow, throws } from "assert";
 import { parseValue } from "graphql";
+import { doesNotThrow, throws } from "node:assert";
 
 import GraphQLUpload from "./GraphQLUpload.mjs";
 import Upload from "./Upload.mjs";
diff --git a/Upload.test.mjs b/Upload.test.mjs
index 083f684..26e6bc6 100644
--- a/Upload.test.mjs
+++ b/Upload.test.mjs
@@ -1,6 +1,6 @@
 // @ts-check
 
-import { ok, rejects, strictEqual } from "assert";
+import { ok, rejects, strictEqual } from "node:assert";
 
 import Upload from "./Upload.mjs";
 
diff --git a/changelog.md b/changelog.md
index dfaeb37..317b46a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,7 @@
 ### Patch
 
 - Updated dev dependencies.
+- Use the `node:` URL scheme for Node.js builtin module imports.
 - Improved JSDoc in the module `GraphQLUpload.mjs`.
 - Revamped the readme:
   - Removed the badges.
diff --git a/graphqlUploadExpress.test.mjs b/graphqlUploadExpress.test.mjs
index 544cdd2..b829bad 100644
--- a/graphqlUploadExpress.test.mjs
+++ b/graphqlUploadExpress.test.mjs
@@ -1,9 +1,9 @@
 // @ts-check
 
-import { deepStrictEqual, ok, strictEqual } from "assert";
 import express from "express";
-import { createServer } from "http";
 import createError from "http-errors";
+import { deepStrictEqual, ok, strictEqual } from "node:assert";
+import { createServer } from "node:http";
 import fetch, { File, FormData } from "node-fetch";
 
 import graphqlUploadExpress from "./graphqlUploadExpress.mjs";
diff --git a/graphqlUploadKoa.test.mjs b/graphqlUploadKoa.test.mjs
index 1bd9f51..e3d62fc 100644
--- a/graphqlUploadKoa.test.mjs
+++ b/graphqlUploadKoa.test.mjs
@@ -1,8 +1,8 @@
 // @ts-check
 
-import { deepStrictEqual, ok, strictEqual } from "assert";
-import { createServer } from "http";
 import Koa from "koa";
+import { deepStrictEqual, ok, strictEqual } from "node:assert";
+import { createServer } from "node:http";
 import fetch, { File, FormData } from "node-fetch";
 
 import graphqlUploadKoa from "./graphqlUploadKoa.mjs";
diff --git a/ignoreStream.mjs b/ignoreStream.mjs
index 81604d0..45066d4 100644
--- a/ignoreStream.mjs
+++ b/ignoreStream.mjs
@@ -2,7 +2,7 @@
 
 /**
  * Safely ignores a Node.js readable stream.
- * @param {import("stream").Readable} stream Node.js readable stream.
+ * @param {import("node:stream").Readable} stream Node.js readable stream.
  */
 export default function ignoreStream(stream) {
   // Prevent an unhandled error from crashing the process.
diff --git a/ignoreStream.test.mjs b/ignoreStream.test.mjs
index 2321ed4..2d3eba8 100644
--- a/ignoreStream.test.mjs
+++ b/ignoreStream.test.mjs
@@ -1,6 +1,6 @@
 // @ts-check
 
-import { doesNotThrow, strictEqual } from "assert";
+import { doesNotThrow, strictEqual } from "node:assert";
 
 import ignoreStream from "./ignoreStream.mjs";
 import CountReadableStream from "./test/CountReadableStream.mjs";
diff --git a/processRequest.mjs b/processRequest.mjs
index f4c11f0..deed730 100644
--- a/processRequest.mjs
+++ b/processRequest.mjs
@@ -370,7 +370,7 @@ export default function processRequest(
  * all resolvers have resolved, or after an error has interrupted the request.
  * @callback FileUploadCreateReadStream
  * @param {FileUploadCreateReadStreamOptions} [options] Options.
- * @returns {import("stream").Readable}
+ * @returns {import("node:stream").Readable}
  *   [Node.js readable stream](https://nodejs.org/api/stream.html#readable-streams)
  *   of the file’s contents.
  * @see [Node.js `Readable` stream constructor docs](https://nodejs.org/api/stream.html#new-streamreadableoptions).
@@ -399,9 +399,9 @@ export default function processRequest(
  * Processes an incoming
  * [GraphQL multipart request](https://github.com/jaydenseric/graphql-multipart-request-spec).
  * @callback ProcessRequestFunction
- * @param {import("http").IncomingMessage} request
+ * @param {import("node:http").IncomingMessage} request
  *   [Node.js HTTP server request instance](https://nodejs.org/api/http.html#http_class_http_incomingmessage).
- * @param {import("http").ServerResponse} response
+ * @param {import("node:http").ServerResponse} response
  *   [Node.js HTTP server response instance](https://nodejs.org/api/http.html#http_class_http_serverresponse).
  * @param {ProcessRequestOptions} [options] Options.
  * @returns {Promise<
diff --git a/processRequest.test.mjs b/processRequest.test.mjs
index d253181..ce7f694 100644
--- a/processRequest.test.mjs
+++ b/processRequest.test.mjs
@@ -1,5 +1,6 @@
 // @ts-check
 
+import { ReadStream } from "fs-capacitor";
 import {
   deepStrictEqual,
   notStrictEqual,
@@ -7,9 +8,8 @@ import {
   rejects,
   strictEqual,
   throws,
-} from "assert";
-import { ReadStream } from "fs-capacitor";
-import { createServer } from "http";
+} from "node:assert";
+import { createServer } from "node:http";
 import fetch, { File, FormData } from "node-fetch";
 
 import processRequest from "./processRequest.mjs";
diff --git a/test/CountReadableStream.mjs b/test/CountReadableStream.mjs
index eb8da51..6f20f25 100644
--- a/test/CountReadableStream.mjs
+++ b/test/CountReadableStream.mjs
@@ -1,13 +1,13 @@
 // @ts-check
 
-import { Readable } from "stream";
+import { Readable } from "node:stream";
 
 /**
  * A count readable stream, for testing purposes.
  * @see [Example counting stream in the Node.js docs](https://nodejs.org/api/stream.html#an-example-counting-stream).
  */
 export default class CountReadableStream extends Readable {
-  /** @param {import("stream").ReadableOptions} [options] */
+  /** @param {import("node:stream").ReadableOptions} [options] */
   constructor(options) {
     super(options);
     this._max = 1000000;
diff --git a/test/abortingMultipartRequest.mjs b/test/abortingMultipartRequest.mjs
index 55189d7..077ebfc 100644
--- a/test/abortingMultipartRequest.mjs
+++ b/test/abortingMultipartRequest.mjs
@@ -1,9 +1,9 @@
 // @ts-check
 
 import { FormDataEncoder } from "form-data-encoder";
+import { Readable } from "node:stream";
 import nodeAbortController from "node-abort-controller";
 import fetch, { AbortError } from "node-fetch";
-import { Readable } from "stream";
 
 const AbortController =
   globalThis.AbortController || nodeAbortController.AbortController;
diff --git a/test/listen.mjs b/test/listen.mjs
index 6da9e4d..b3efa1e 100644
--- a/test/listen.mjs
+++ b/test/listen.mjs
@@ -2,7 +2,7 @@
 
 /**
  * Starts a Node.js HTTP server.
- * @param {import("http").Server} server Node.js HTTP server.
+ * @param {import("node:http").Server} server Node.js HTTP server.
  * @returns Resolves the port the server is listening on, and a server close
  *   function.
  */
@@ -12,7 +12,7 @@ export default async function listen(server) {
   });
 
   return {
-    port: /** @type {import("net").AddressInfo} */ (server.address()).port,
+    port: /** @type {import("node:net").AddressInfo} */ (server.address()).port,
     close: () => server.close(),
   };
 }
diff --git a/test/streamToString.mjs b/test/streamToString.mjs
index ac37762..ca01a41 100644
--- a/test/streamToString.mjs
+++ b/test/streamToString.mjs
@@ -2,7 +2,7 @@
 
 /**
  * Converts a Node.js readable stream to a string.
- * @param {import("stream").Readable} stream Node.js readable stream.
+ * @param {import("node:stream").Readable} stream Node.js readable stream.
  * @returns {Promise<string>} Resolves the final string.
  */
 export default function streamToString(stream) {