diff --git a/addons/xterm-addon-attach/test/AttachAddon.api.ts b/addons/xterm-addon-attach/test/AttachAddon.api.ts
index 2dea645f..ef26cfd2 100644
--- a/addons/xterm-addon-attach/test/AttachAddon.api.ts
+++ b/addons/xterm-addon-attach/test/AttachAddon.api.ts
@@ -7,7 +7,7 @@ import WebSocket = require('ws');
 import { openTerminal, pollFor, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-fit/test/FitAddon.api.ts b/addons/xterm-addon-fit/test/FitAddon.api.ts
index 5a5b3264..8859b5a6 100644
--- a/addons/xterm-addon-fit/test/FitAddon.api.ts
+++ b/addons/xterm-addon-fit/test/FitAddon.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { openTerminal, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-search/test/SearchAddon.api.ts b/addons/xterm-addon-search/test/SearchAddon.api.ts
index b92dbc3a..3c94d416 100644
--- a/addons/xterm-addon-search/test/SearchAddon.api.ts
+++ b/addons/xterm-addon-search/test/SearchAddon.api.ts
@@ -9,7 +9,7 @@ import { resolve } from 'path';
 import { openTerminal, writeSync, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-serialize/test/SerializeAddon.api.ts b/addons/xterm-addon-serialize/test/SerializeAddon.api.ts
index d472d753..a7b3b816 100644
--- a/addons/xterm-addon-serialize/test/SerializeAddon.api.ts
+++ b/addons/xterm-addon-serialize/test/SerializeAddon.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { openTerminal, writeSync, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-unicode11/test/Unicode11Addon.api.ts b/addons/xterm-addon-unicode11/test/Unicode11Addon.api.ts
index 7369eeaa..ba536e90 100644
--- a/addons/xterm-addon-unicode11/test/Unicode11Addon.api.ts
+++ b/addons/xterm-addon-unicode11/test/Unicode11Addon.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { openTerminal, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-web-links/test/WebLinksAddon.api.ts b/addons/xterm-addon-web-links/test/WebLinksAddon.api.ts
index 47fd7911..54650f1f 100644
--- a/addons/xterm-addon-web-links/test/WebLinksAddon.api.ts
+++ b/addons/xterm-addon-web-links/test/WebLinksAddon.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { openTerminal, pollFor, writeSync, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/addons/xterm-addon-webgl/test/WebglRenderer.api.ts b/addons/xterm-addon-webgl/test/WebglRenderer.api.ts
index e0aa68e7..1722e570 100644
--- a/addons/xterm-addon-webgl/test/WebglRenderer.api.ts
+++ b/addons/xterm-addon-webgl/test/WebglRenderer.api.ts
@@ -9,7 +9,7 @@ import { assert } from 'chai';
 import { openTerminal, pollFor, writeSync, getBrowserType } from '../../../out-test/api/TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/bin/test_api.js b/bin/test_api.js
index 7afb34bc..6aee0e50 100644
--- a/bin/test_api.js
+++ b/bin/test_api.js
@@ -34,6 +34,13 @@ if (process.argv.length > 2) {
 
 
 env.DEBUG = flagArgs.indexOf('--debug') >= 0 ? 'debug' : '';
+env.PORT = 3001;
+
+const server = cp.spawn('node', ['demo/start'], {
+  cwd: path.resolve(__dirname, '..'),
+  env,
+  stdio: 'inherit'
+})
 
 const run = cp.spawnSync(
   npmBinScript('mocha'),
diff --git a/test/api/CharWidth.api.ts b/test/api/CharWidth.api.ts
index 01d69861..d7cea109 100644
--- a/test/api/CharWidth.api.ts
+++ b/test/api/CharWidth.api.ts
@@ -6,7 +6,7 @@
 import { pollFor, openTerminal, getBrowserType } from './TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/test/api/InputHandler.api.ts b/test/api/InputHandler.api.ts
index 16ab2301..a695abdc 100644
--- a/test/api/InputHandler.api.ts
+++ b/test/api/InputHandler.api.ts
@@ -8,7 +8,7 @@ import { pollFor, openTerminal, getBrowserType } from './TestUtils';
 import { Browser, Page } from 'playwright';
 import { IRenderDimensions } from 'browser/renderer/Types';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/test/api/MouseTracking.api.ts b/test/api/MouseTracking.api.ts
index 0bd0cc18..3df21a90 100644
--- a/test/api/MouseTracking.api.ts
+++ b/test/api/MouseTracking.api.ts
@@ -6,7 +6,7 @@
 import { pollFor, writeSync, openTerminal, getBrowserType } from './TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/test/api/Parser.api.ts b/test/api/Parser.api.ts
index 7bd55544..0ef57cf1 100644
--- a/test/api/Parser.api.ts
+++ b/test/api/Parser.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { writeSync, openTerminal, getBrowserType } from './TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;
diff --git a/test/api/Terminal.api.ts b/test/api/Terminal.api.ts
index 2f388deb..39ca1a3b 100644
--- a/test/api/Terminal.api.ts
+++ b/test/api/Terminal.api.ts
@@ -7,7 +7,7 @@ import { assert } from 'chai';
 import { pollFor, timeout, writeSync, openTerminal, getBrowserType } from './TestUtils';
 import { Browser, Page } from 'playwright';
 
-const APP = 'http://127.0.0.1:3000/test';
+const APP = 'http://127.0.0.1:3001/test';
 
 let browser: Browser;
 let page: Page;