diff --git a/README.md b/README.md
index 8be8ff93b0..9e803643ec 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # 🎭 Playwright
 
-[![npm version](https://img.shields.io/npm/v/playwright.svg?style=flat)](https://www.npmjs.com/package/playwright) [![Join Slack](https://img.shields.io/badge/join-slack-infomational)](https://join.slack.com/t/playwright/shared_invite/enQtOTEyMTUxMzgxMjIwLThjMDUxZmIyNTRiMTJjNjIyMzdmZDA3MTQxZWUwZTFjZjQwNGYxZGM5MzRmNzZlMWI5ZWUyOTkzMjE5Njg1NDg) <!-- GEN:chromium-version-badge -->[![Chromium version](https://img.shields.io/badge/chromium-86.0.4209.0-blue.svg?logo=google-chrome)](https://www.chromium.org/Home)<!-- GEN:stop --> <!-- GEN:firefox-version-badge -->[![Firefox version](https://img.shields.io/badge/firefox-78.0b5-blue.svg?logo=mozilla-firefox)](https://www.mozilla.org/en-US/firefox/new/)<!-- GEN:stop --> [![WebKit version](https://img.shields.io/badge/webkit-14.0-blue.svg?logo=safari)](https://webkit.org/)
+[![npm version](https://img.shields.io/npm/v/playwright.svg?style=flat)](https://www.npmjs.com/package/playwright) [![Join Slack](https://img.shields.io/badge/join-slack-infomational)](https://join.slack.com/t/playwright/shared_invite/enQtOTEyMTUxMzgxMjIwLThjMDUxZmIyNTRiMTJjNjIyMzdmZDA3MTQxZWUwZTFjZjQwNGYxZGM5MzRmNzZlMWI5ZWUyOTkzMjE5Njg1NDg) <!-- GEN:chromium-version-badge -->[![Chromium version](https://img.shields.io/badge/chromium-86.0.4211.0-blue.svg?logo=google-chrome)](https://www.chromium.org/Home)<!-- GEN:stop --> <!-- GEN:firefox-version-badge -->[![Firefox version](https://img.shields.io/badge/firefox-78.0b5-blue.svg?logo=mozilla-firefox)](https://www.mozilla.org/en-US/firefox/new/)<!-- GEN:stop --> [![WebKit version](https://img.shields.io/badge/webkit-14.0-blue.svg?logo=safari)](https://webkit.org/)
 
 ##### [Docs](docs/README.md) | [API reference](docs/api.md) | [Changelog](https://github.com/microsoft/playwright/releases)
 
@@ -8,7 +8,7 @@ Playwright is a Node library to automate [Chromium](https://www.chromium.org/Hom
 
 |          | Linux | macOS | Windows |
 |   :---   | :---: | :---: | :---:   |
-| Chromium <!-- GEN:chromium-version -->86.0.4209.0<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
+| Chromium <!-- GEN:chromium-version -->86.0.4211.0<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 | WebKit 14.0 | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 | Firefox <!-- GEN:firefox-version -->78.0b5<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 
diff --git a/browsers.json b/browsers.json
index 3c77001012..46b0ad902b 100644
--- a/browsers.json
+++ b/browsers.json
@@ -3,7 +3,7 @@
   "browsers": [
     {
       "name": "chromium",
-      "revision": "790602"
+      "revision": "791201"
     },
     {
       "name": "firefox",
diff --git a/docs/api.md b/docs/api.md
index f21b3b7a7c..a8bc9ba5fe 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -3729,7 +3729,7 @@ Aborts the route's request.
 #### route.continue([overrides])
 - `overrides` <[Object]> Optional request overrides, which can be one of the following:
   - `method` <[string]> If set changes the request method (e.g. GET or POST)
-  - `postData` <[string]> If set changes the post data of request
+  - `postData` <[string]|[Buffer]> If set changes the post data of request
   - `headers` <[Object]<[string], [string]>> If set changes the request HTTP headers. Header values will be converted to a string.
 - returns: <[Promise]>
 
diff --git a/src/chromium/crNetworkManager.ts b/src/chromium/crNetworkManager.ts
index 9f2a22ea15..a7ad83d6f6 100644
--- a/src/chromium/crNetworkManager.ts
+++ b/src/chromium/crNetworkManager.ts
@@ -359,7 +359,7 @@ class InterceptableRequest implements network.RouteDelegate {
       requestId: this._interceptionId!,
       headers: overrides.headers,
       method: overrides.method,
-      postData: overrides.postData
+      postData: overrides.postData ? overrides.postData.toString('base64') : undefined
     });
   }
 
diff --git a/src/chromium/protocol.ts b/src/chromium/protocol.ts
index 9cb92d023a..f3ef64e516 100644
--- a/src/chromium/protocol.ts
+++ b/src/chromium/protocol.ts
@@ -11856,7 +11856,7 @@ If absent, a standard phrase matching responseCode is used.
       /**
        * If set, overrides the post data in the request.
        */
-      postData?: string;
+      postData?: binary;
       /**
        * If set, overrides the request headers.
        */
diff --git a/src/rpc/client/network.ts b/src/rpc/client/network.ts
index c70b2a57ea..9159f1456d 100644
--- a/src/rpc/client/network.ts
+++ b/src/rpc/client/network.ts
@@ -168,7 +168,12 @@ export class Route extends ChannelOwner<RouteChannel, RouteInitializer> {
   }
 
   async continue(overrides: types.ContinueOverrides = {}) {
-    await this._channel.continue(normalizeContinueOverrides(overrides));
+    const normalized = normalizeContinueOverrides(overrides);
+    await this._channel.continue({
+      method: normalized.method,
+      headers: normalized.headers,
+      postData: normalized.postData ? normalized.postData.toString('base64') : undefined
+    });
   }
 }
 
diff --git a/src/rpc/protocol.yml b/src/rpc/protocol.yml
index 1646ebc174..8c4222e105 100644
--- a/src/rpc/protocol.yml
+++ b/src/rpc/protocol.yml
@@ -1686,7 +1686,7 @@ Route:
             properties:
               name: string
               value: string
-        postData: string?
+        postData: binary?
 
     fulfill:
       parameters:
diff --git a/src/rpc/serializers.ts b/src/rpc/serializers.ts
index b6702c9066..f255c54ddc 100644
--- a/src/rpc/serializers.ts
+++ b/src/rpc/serializers.ts
@@ -107,7 +107,7 @@ export function normalizeContinueOverrides(overrides: types.ContinueOverrides):
   return {
     method: overrides.method,
     headers: overrides.headers ? headersObjectToArray(overrides.headers) : undefined,
-    postData: overrides.postData,
+    postData: helper.isString(overrides.postData) ? Buffer.from(overrides.postData, 'utf8') : overrides.postData,
   };
 }
 
diff --git a/src/rpc/server/networkDispatchers.ts b/src/rpc/server/networkDispatchers.ts
index 37e728d34f..0f466c536a 100644
--- a/src/rpc/server/networkDispatchers.ts
+++ b/src/rpc/server/networkDispatchers.ts
@@ -82,11 +82,11 @@ export class RouteDispatcher extends Dispatcher<Route, RouteInitializer> impleme
     });
   }
 
-  async continue(params: types.NormalizedContinueOverrides): Promise<void> {
+  async continue(params: { method?: string, headers?: types.HeadersArray, postData?: string }): Promise<void> {
     await this._object.continue({
       method: params.method,
       headers: params.headers ? headersArrayToObject(params.headers) : undefined,
-      postData: params.postData,
+      postData: params.postData ? Buffer.from(params.postData, 'base64') : undefined,
     });
   }
 
diff --git a/src/types.ts b/src/types.ts
index e51baf0c3a..3b532e0a1c 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -227,13 +227,13 @@ export type NormalizedFulfillResponse = {
 export type ContinueOverrides = {
   method?: string,
   headers?: Headers,
-  postData?: string,
+  postData?: string | Buffer,
 };
 
 export type NormalizedContinueOverrides = {
   method?: string,
   headers?: HeadersArray,
-  postData?: string,
+  postData?: Buffer,
 };
 
 export type NetworkCookie = {
diff --git a/test/interception.jest.js b/test/interception.jest.js
index 11860f4d34..6ad423dda9 100644
--- a/test/interception.jest.js
+++ b/test/interception.jest.js
@@ -532,7 +532,18 @@ describe('Request.continue', function() {
       server.waitForRequest('/sleep.zzz'),
       page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
     ]);
-    expect(await serverRequest.postBody).toBe('doggo');
+    expect((await serverRequest.postBody).toString('utf8')).toBe('doggo');
+  });
+  it.fail(FFOX)('should amend utf8 post data', async({page, server}) => {
+    await page.goto(server.EMPTY_PAGE);
+    await page.route('**/*', route => {
+      route.continue({ postData: 'пушкин' });
+    });
+    const [serverRequest] = await Promise.all([
+      server.waitForRequest('/sleep.zzz'),
+      page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
+    ]);
+    expect((await serverRequest.postBody).toString('utf8')).toBe('пушкин');
   });
   it.fail(FFOX)('should amend longer post data', async({page, server}) => {
     await page.goto(server.EMPTY_PAGE);
@@ -543,7 +554,22 @@ describe('Request.continue', function() {
       server.waitForRequest('/sleep.zzz'),
       page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
     ]);
-    expect(await serverRequest.postBody).toBe('doggo-is-longer-than-birdy');
+    expect((await serverRequest.postBody).toString('utf8')).toBe('doggo-is-longer-than-birdy');
+  });
+  it.fail(FFOX)('should amend binary post data', async({page, server}) => {
+    await page.goto(server.EMPTY_PAGE);
+    const arr = Array.from(Array(256).keys());
+    await page.route('**/*', route => {
+      route.continue({ postData: Buffer.from(arr) });
+    });
+    const [serverRequest] = await Promise.all([
+      server.waitForRequest('/sleep.zzz'),
+      page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
+    ]);
+    const buffer = await serverRequest.postBody;
+    expect(buffer.length).toBe(arr.length);
+    for (let i = 0; i < arr.length; ++i)
+      expect(arr[i]).toBe(buffer[i]);
   });
 });
 
diff --git a/utils/testserver/index.js b/utils/testserver/index.js
index 5d901dcc67..fcd2924142 100644
--- a/utils/testserver/index.js
+++ b/utils/testserver/index.js
@@ -194,8 +194,8 @@ class TestServer {
         throw error;
     });
     request.postBody = new Promise(resolve => {
-      let body = '';
-      request.on('data', chunk => body += chunk);
+      let body = Buffer.from([]);
+      request.on('data', chunk => body = Buffer.concat([body, chunk]));
       request.on('end', () => resolve(body));
     });
     const pathName = url.parse(request.url).path;