diff --git a/docs/src/api/class-browsercontext.md b/docs/src/api/class-browsercontext.md
index ed7cdaaffa..3aed64a178 100644
--- a/docs/src/api/class-browsercontext.md
+++ b/docs/src/api/class-browsercontext.md
@@ -1060,7 +1060,7 @@ it gets merged via the [`new URL()`](https://developer.mozilla.org/en-US/docs/We
 ### param: BrowserContext.route.handler
 * since: v1.8
 * langs: js, python
-- `handler` <[function]\([Route], [Request]\)>
+- `handler` <[function]\([Route], [Request]\): [Promise<any>|any]>
 
 handler function to route the request.
 
diff --git a/docs/src/api/class-page.md b/docs/src/api/class-page.md
index a83f0da4a5..5380ea3e53 100644
--- a/docs/src/api/class-page.md
+++ b/docs/src/api/class-page.md
@@ -3138,7 +3138,7 @@ it gets merged via the [`new URL()`](https://developer.mozilla.org/en-US/docs/We
 ### param: Page.route.handler
 * since: v1.8
 * langs: js, python
-- `handler` <[function]\([Route], [Request]\)>
+- `handler` <[function]\([Route], [Request]\): [Promise<any>|any]>
 
 handler function to route the request.
 
diff --git a/packages/playwright-core/src/client/network.ts b/packages/playwright-core/src/client/network.ts
index 584d7bd555..a84cdf5166 100644
--- a/packages/playwright-core/src/client/network.ts
+++ b/packages/playwright-core/src/client/network.ts
@@ -422,7 +422,7 @@ export class Route extends ChannelOwner<channels.RouteChannel> implements api.Ro
   }
 }
 
-export type RouteHandlerCallback = (route: Route, request: Request) => void;
+export type RouteHandlerCallback = (route: Route, request: Request) => Promise<any> | void;
 
 export type ResourceTiming = {
   startTime: number;
diff --git a/packages/playwright-core/types/types.d.ts b/packages/playwright-core/types/types.d.ts
index 9c6e4c7bb1..69f4b9e319 100644
--- a/packages/playwright-core/types/types.d.ts
+++ b/packages/playwright-core/types/types.d.ts
@@ -3564,7 +3564,7 @@ export interface Page {
    * @param handler handler function to route the request.
    * @param options
    */
-  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => void), options?: {
+  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => Promise<any>|any), options?: {
     /**
      * How often a route should be used. By default it will be used every time.
      */
@@ -8041,7 +8041,7 @@ export interface BrowserContext {
    * @param handler handler function to route the request.
    * @param options
    */
-  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => void), options?: {
+  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => Promise<any>|any), options?: {
     /**
      * How often a route should be used. By default it will be used every time.
      */
diff --git a/utils/generate_types/test/test.ts b/utils/generate_types/test/test.ts
index e9a3a9d4ba..37729f29d8 100644
--- a/utils/generate_types/test/test.ts
+++ b/utils/generate_types/test/test.ts
@@ -139,6 +139,8 @@ playwright.chromium.launch().then(async browser => {
     else route.continue();
   });
 
+  await page.route('**/*', route => route.continue());
+
   await page.route(str => {
     return true;
   }, (route, request) => {