diff --git a/express-serve-static-core/express-serve-static-core.d.ts b/express-serve-static-core/express-serve-static-core.d.ts
index e15dbcb5b6..7b50e8571b 100644
--- a/express-serve-static-core/express-serve-static-core.d.ts
+++ b/express-serve-static-core/express-serve-static-core.d.ts
@@ -88,7 +88,7 @@ declare module "express-serve-static-core" {
         options: IRouterMatcher<T>;
         head: IRouterMatcher<T>;
 
-        route(path: string): IRoute;
+        route(path: string | RegExp): IRoute;
 
         use(...handler: RequestHandlerParams[]): T;
         use(handler: ErrorRequestHandler | RequestHandlerParams): T;