diff --git a/types/express-rate-limit/express-rate-limit-tests.ts b/types/express-rate-limit/express-rate-limit-tests.ts
index fab5badeb8..677c46254b 100644
--- a/types/express-rate-limit/express-rate-limit-tests.ts
+++ b/types/express-rate-limit/express-rate-limit-tests.ts
@@ -11,7 +11,12 @@ const createAccountLimiter = new RateLimit({
   delayAfter: 1, // begin slowing down responses after the first request
   delayMs: 3 * 1000, // slow down subsequent responses by 3 seconds per request
   max: 5, // start blocking after 5 requests
-  message: "Too many accounts created from this IP, please try again after an hour"
+  message: "Too many accounts created from this IP, please try again after an hour",
+  handler: (req, _, next) => next(new Error(`TooManyRequests: ${req.ip}`))
+});
+
+const callbackWithFewerParams = new RateLimit({
+  handler: (req, res) => res.status(429).json(`TooManyRequests: ${req.ip}`)
 });
 
 class SomeStore implements RateLimit.Store {
diff --git a/types/express-rate-limit/index.d.ts b/types/express-rate-limit/index.d.ts
index 86b8d497b0..5ae2013aef 100644
--- a/types/express-rate-limit/index.d.ts
+++ b/types/express-rate-limit/index.d.ts
@@ -1,6 +1,6 @@
-// Type definitions for express-rate-limit 2.8
+// Type definitions for express-rate-limit 2.9
 // Project: https://github.com/nfriedly/express-rate-limit
-// Definitions by: Cyril Schumacher <https://github.com/cyrilschumacher>
+// Definitions by: Cyril Schumacher <https://github.com/cyrilschumacher>, makepost <https://github.com/makepost>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 import express = require("express");
@@ -17,15 +17,15 @@ declare namespace RateLimit {
     interface Options {
         delayAfter?: number;
         delayMs?: number;
-        handlers?(req?: express.Request, res?: express.Response, next?: express.NextFunction): any;
+        handler?(req: express.Request, res: express.Response, next: express.NextFunction): any;
         headers?: boolean;
-        keyGenerator?(req?: express.Request, res?: express.Response): string;
+        keyGenerator?(req: express.Request, res: express.Response): string;
         max?: number;
         message?: string;
-        skip?(req?: express.Request, res?: express.Response): boolean;
+        skip?(req: express.Request, res: express.Response): boolean;
         statusCode?: number;
         store?: Store;
-        onLimitReached?(req?: express.Request, res?: express.Response, optionsUsed?: Options): void;
+        onLimitReached?(req: express.Request, res: express.Response, optionsUsed: Options): void;
         windowMs?: number;
     }
 }