diff --git a/packages/playwright-core/browsers.json b/packages/playwright-core/browsers.json
index 5626fd746f..9288f929c5 100644
--- a/packages/playwright-core/browsers.json
+++ b/packages/playwright-core/browsers.json
@@ -33,7 +33,7 @@
     },
     {
       "name": "webkit",
-      "revision": "1648",
+      "revision": "1658",
       "installByDefault": true,
       "revisionOverrides": {
         "mac10.14": "1446",
diff --git a/packages/playwright-core/src/server/webkit/protocol.d.ts b/packages/playwright-core/src/server/webkit/protocol.d.ts
index 7261db2524..3b0420ab26 100644
--- a/packages/playwright-core/src/server/webkit/protocol.d.ts
+++ b/packages/playwright-core/src/server/webkit/protocol.d.ts
@@ -1559,6 +1559,10 @@ export module Protocol {
        * Identifier of the network request associated with this message.
        */
       networkRequestId?: Network.RequestId;
+      /**
+       * Time when this message was added. Currently only used when an expensive operation happens to make sure that the frontend can account for it.
+       */
+      timestamp?: number;
     }
     /**
      * Stack entry for console errors and assertions.
@@ -2384,7 +2388,7 @@ export module Protocol {
       /**
        * Query selector result.
        */
-      nodeId: NodeId;
+      nodeId?: NodeId;
     }
     /**
      * Executes <code>querySelectorAll</code> on a given node.
@@ -8564,11 +8568,11 @@ the top of the viewport and Y increases as it proceeds towards the bottom of the
     /**
      * Timeline record type.
      */
-    export type EventType = "EventDispatch"|"ScheduleStyleRecalculation"|"RecalculateStyles"|"InvalidateLayout"|"Layout"|"Paint"|"Composite"|"RenderingFrame"|"TimerInstall"|"TimerRemove"|"TimerFire"|"EvaluateScript"|"TimeStamp"|"Time"|"TimeEnd"|"FunctionCall"|"ProbeSample"|"ConsoleProfile"|"RequestAnimationFrame"|"CancelAnimationFrame"|"FireAnimationFrame"|"ObserverCallback";
+    export type EventType = "EventDispatch"|"ScheduleStyleRecalculation"|"RecalculateStyles"|"InvalidateLayout"|"Layout"|"Paint"|"Composite"|"RenderingFrame"|"TimerInstall"|"TimerRemove"|"TimerFire"|"EvaluateScript"|"TimeStamp"|"Time"|"TimeEnd"|"FunctionCall"|"ProbeSample"|"ConsoleProfile"|"RequestAnimationFrame"|"CancelAnimationFrame"|"FireAnimationFrame"|"ObserverCallback"|"Screenshot";
     /**
      * Instrument types.
      */
-    export type Instrument = "ScriptProfiler"|"Timeline"|"CPU"|"Memory"|"Heap"|"Animation";
+    export type Instrument = "ScriptProfiler"|"Timeline"|"CPU"|"Memory"|"Heap"|"Animation"|"Screenshot";
     /**
      * Timeline record contains information about the recorded activity.
      */
diff --git a/tests/library/browsercontext-locale.spec.ts b/tests/library/browsercontext-locale.spec.ts
index 1c213f9657..e0fcd22645 100644
--- a/tests/library/browsercontext-locale.spec.ts
+++ b/tests/library/browsercontext-locale.spec.ts
@@ -28,10 +28,10 @@ it('should affect accept-language header @smoke', async ({ browser, server }) =>
   await context.close();
 });
 
-it('should affect navigator.language', async ({ browser, server }) => {
-  const context = await browser.newContext({ locale: 'fr-CH' });
+it('should affect navigator.language', async ({ browser }) => {
+  const context = await browser.newContext({ locale: 'fr-FR' });
   const page = await context.newPage();
-  expect(await page.evaluate(() => navigator.language)).toBe('fr-CH');
+  expect(await page.evaluate(() => navigator.language)).toBe('fr-FR');
   await context.close();
 });
 
@@ -87,7 +87,7 @@ it('should format number in popups', async ({ browser, server }) => {
 });
 
 it('should affect navigator.language in popups', async ({ browser, server }) => {
-  const context = await browser.newContext({ locale: 'fr-CH' });
+  const context = await browser.newContext({ locale: 'fr-FR' });
   const page = await context.newPage();
   await page.goto(server.EMPTY_PAGE);
   const [popup] = await Promise.all([
@@ -96,7 +96,7 @@ it('should affect navigator.language in popups', async ({ browser, server }) =>
   ]);
   await popup.waitForLoadState('domcontentloaded');
   const result = await popup.evaluate('window.initialNavigatorLanguage');
-  expect(result).toBe('fr-CH');
+  expect(result).toBe('fr-FR');
   await context.close();
 });
 
@@ -138,7 +138,7 @@ it('should be isolated between contexts', async ({ browser, server }) => {
   ]);
 });
 
-it('should not change default locale in another context', async ({ browser, server }) => {
+it('should not change default locale in another context', async ({ browser }) => {
   async function getContextLocale(context) {
     const page = await context.newPage();
     return await page.evaluate(() => (new Intl.NumberFormat()).resolvedOptions().locale);
@@ -150,7 +150,7 @@ it('should not change default locale in another context', async ({ browser, serv
     defaultLocale = await getContextLocale(context);
     await context.close();
   }
-  const localeOverride = defaultLocale === 'ru-RU' ? 'de-DE' : 'ru-RU';
+  const localeOverride = defaultLocale === 'es-MX' ? 'de-DE' : 'es-MX';
   {
     const context = await browser.newContext({ locale: localeOverride });
     expect(await getContextLocale(context)).toBe(localeOverride);
@@ -164,13 +164,13 @@ it('should not change default locale in another context', async ({ browser, serv
 });
 
 it('should format number in workers', async ({ browser, server }) => {
-  const context = await browser.newContext({ locale: 'ru-RU' });
+  const context = await browser.newContext({ locale: 'es-MX' });
   const page = await context.newPage();
   await page.goto(server.EMPTY_PAGE);
   const [worker] = await Promise.all([
     page.waitForEvent('worker'),
     page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1)'], { type: 'application/javascript' })))),
   ]);
-  expect(await worker.evaluate(() => (10000.20).toLocaleString())).toBe('10\u00A0000,2');
+  expect(await worker.evaluate(() => (10000.20).toLocaleString())).toBe('10,000.2');
   await context.close();
 });
diff --git a/tests/library/defaultbrowsercontext-2.spec.ts b/tests/library/defaultbrowsercontext-2.spec.ts
index 90e3162982..170e6d2989 100644
--- a/tests/library/defaultbrowsercontext-2.spec.ts
+++ b/tests/library/defaultbrowsercontext-2.spec.ts
@@ -58,8 +58,8 @@ it('should support timezoneId option', async ({ launchPersistent, browserName })
 });
 
 it('should support locale option', async ({ launchPersistent }) => {
-  const { page } = await launchPersistent({ locale: 'fr-CH' });
-  expect(await page.evaluate(() => navigator.language)).toBe('fr-CH');
+  const { page } = await launchPersistent({ locale: 'fr-FR' });
+  expect(await page.evaluate(() => navigator.language)).toBe('fr-FR');
 });
 
 it('should support geolocation and permissions options', async ({ server, launchPersistent }) => {