diff --git a/node-tests/setup-middleware-test.js b/node-tests/setup-middleware-test.js
index 0dc976d6..0bb8712d 100644
--- a/node-tests/setup-middleware-test.js
+++ b/node-tests/setup-middleware-test.js
@@ -3,6 +3,7 @@ const fetch = require('node-fetch');
 const fs = require('fs');
 const tmp = require('tmp');
 const express = require('express');
+const getPort = require('get-port');
 const readJSONSync = require('fs-extra').readJSONSync;
 const {
   setupMiddleware,
@@ -29,8 +30,9 @@ QUnit.module('setupMiddleware', function (hooks) {
   let tmpDir;
   let app;
   let server;
+  let port;
 
-  hooks.beforeEach(function () {
+  hooks.beforeEach(async function () {
     tmpDir = createTmpDir();
     app = express();
 
@@ -41,7 +43,8 @@ QUnit.module('setupMiddleware', function (hooks) {
       reportDir: 'ember-a11y-report',
     });
 
-    server = app.listen(3000);
+    port = await getPort({ port: 3000 });
+    server = app.listen(port);
   });
 
   hooks.afterEach(function () {
@@ -53,7 +56,7 @@ QUnit.module('setupMiddleware', function (hooks) {
     async function (assert) {
       let data = [buildResult(violationsFixture)];
 
-      let json = await fetch('http://localhost:3000/report-violations', {
+      let json = await fetch(`http://localhost:${port}/report-violations`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',
diff --git a/package.json b/package.json
index dbfb0fa5..d42be293 100644
--- a/package.json
+++ b/package.json
@@ -119,6 +119,7 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.1.4",
     "express": "^4.17.1",
+    "get-port": "^5.1.1",
     "loader.js": "^4.7.0",
     "node-fetch": "^2.6.0",
     "npm-run-all": "^4.1.5",
diff --git a/yarn.lock b/yarn.lock
index 1d2158eb..c88cf41a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7118,6 +7118,11 @@ get-intrinsic@^1.0.2, get-intrinsic@^1.1.0, get-intrinsic@^1.1.1:
     has "^1.0.3"
     has-symbols "^1.0.1"
 
+get-port@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/get-port/-/get-port-5.1.1.tgz#0469ed07563479de6efb986baf053dcd7d4e3193"
+  integrity sha512-g/Q1aTSDOxFpchXC4i8ZWvxA1lnPqx/JHqcpIw0/LX9T8x/GBbi6YnlN5nhaKIFkT8oFsscUKgDJYxfwfS6QsQ==
+
 get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"