diff --git a/supertest/supertest.d.ts b/supertest/supertest.d.ts
index 8a2069d33..d13f7d595 100644
--- a/supertest/supertest.d.ts
+++ b/supertest/supertest.d.ts
@@ -19,6 +19,8 @@ declare module "supertest" {
       expect(body: Object, callback?: (err: Error, res: superagent.Response) => void): Test;
       expect(field: string, val: string, callback?: (err: Error, res: superagent.Response) => void): Test;
       expect(field: string, val: RegExp, callback?: (err: Error, res: superagent.Response) => void): Test;
+      set(field: string, val: string): Test;
+      set(field: Object): Test;
     }
 
     interface SuperTest {