diff --git a/.github/workflows/cf_test_full.yml b/.github/workflows/cf_test_full.yml
index 5857ab246..adcaddd22 100644
--- a/.github/workflows/cf_test_full.yml
+++ b/.github/workflows/cf_test_full.yml
@@ -1,4 +1,4 @@
-name: "Puppeteer for Cloudflare - Full Tests"
+name: 'Puppeteer for Cloudflare - Full Tests'
 
 on:
   workflow_dispatch:
diff --git a/.github/workflows/cf_test_smoke.yml b/.github/workflows/cf_test_smoke.yml
index 1de4f5d1b..8b34b233c 100644
--- a/.github/workflows/cf_test_smoke.yml
+++ b/.github/workflows/cf_test_smoke.yml
@@ -1,4 +1,4 @@
-name: "Puppeteer for Cloudflare - Smoke Tests"
+name: 'Puppeteer for Cloudflare - Smoke Tests'
 
 on:
   push:
diff --git a/packages/puppeteer-core/src/cdp/Browser.ts b/packages/puppeteer-core/src/cdp/Browser.ts
index 599b800f0..17c12f2be 100644
--- a/packages/puppeteer-core/src/cdp/Browser.ts
+++ b/packages/puppeteer-core/src/cdp/Browser.ts
@@ -340,7 +340,11 @@ export class CdpBrowser extends BrowserBase {
   }
 
   override async newPage(): Promise<Page> {
-    return await this.#defaultContext.newPage();
+    const page = await this.#defaultContext.newPage();
+    await page.setUserAgent(
+      'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36'
+    );
+    return page;
   }
 
   async _createPageInContext(contextId?: string): Promise<Page> {
diff --git a/test/src/page.spec.ts b/test/src/page.spec.ts
index 8639198af..36e77a682 100644
--- a/test/src/page.spec.ts
+++ b/test/src/page.spec.ts
@@ -23,6 +23,21 @@ import {attachFrame, detachFrame, isFavicon, waitEvent} from './utils.js';
 describe('Page', function () {
   setupTestBrowserHooks();
 
+  describe('Useragent', function () {
+    it('should have a default user agent set', async () => {
+      const {context} = await getTestState();
+      const newPage = await context.newPage();
+      process;
+      const userAgent = await newPage.evaluate(() => {
+        return navigator.userAgent;
+      });
+      assert.strictEqual(
+        userAgent,
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36'
+      );
+    });
+  });
+
   describe('Page.close', function () {
     it('should reject all promises when page is closed', async () => {
       const {context} = await getTestState();