diff --git a/packages/http-json-body-parser/index.d.ts b/packages/http-json-body-parser/index.d.ts
index 1586a4f85..2ae2e876e 100644
--- a/packages/http-json-body-parser/index.d.ts
+++ b/packages/http-json-body-parser/index.d.ts
@@ -14,6 +14,6 @@ export type Event = Omit<APIGatewayEvent, 'body'> & {
   body: JsonValue
 }
 
-declare function jsonBodyParser (options?: Options): middy.MiddlewareObj<Event>
+declare function jsonBodyParser (options?: Options): middy.MiddlewareObj<APIGatewayEvent, Event>
 
 export default jsonBodyParser
diff --git a/packages/http-json-body-parser/index.test-d.ts b/packages/http-json-body-parser/index.test-d.ts
index c7bca7665..84850eb0f 100644
--- a/packages/http-json-body-parser/index.test-d.ts
+++ b/packages/http-json-body-parser/index.test-d.ts
@@ -1,13 +1,26 @@
 import middy from '@middy/core'
 import { expectType } from 'tsd'
+import { APIGatewayEvent, Context } from 'aws-lambda'
 import jsonBodyParser, { Event } from '.'
 
 // use with default options
 let middleware = jsonBodyParser()
-expectType<middy.MiddlewareObj<Event>>(middleware)
+expectType<middy.MiddlewareObj<APIGatewayEvent, Event>>(middleware)
 
 // use with all options
 middleware = jsonBodyParser({
   reviver: (key: string, value: any) => Boolean(value)
 })
-expectType<middy.MiddlewareObj<Event>>(middleware)
+expectType<middy.MiddlewareObj<APIGatewayEvent, Event>>(middleware)
+
+const handler = (event: APIGatewayEvent, _context: Context) => {
+  console.log(event.body);
+};
+
+const wrapped = middy(handler).use(jsonBodyParser());
+
+const event: APIGatewayEvent = {} as any;
+const context: Context = {} as any;
+
+expectType<Parameters<typeof wrapped>[0]>(event);
+expectType<Parameters<typeof wrapped>[1]>(context);