diff --git a/index.d.ts b/index.d.ts
index 22cde2c..fb25206 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,2 +1,2 @@
-import { AxiosRequestConfig, AxiosPromise } from 'axios';
-export default function mpAdapter(config: AxiosRequestConfig): AxiosPromise;
+import type { AxiosRequestConfig, AxiosPromise } from 'axios';
+export default function mpAdapter(config: AxiosRequestConfig, { transformRequestOption }?: { transformRequestOption?: ((requestOption: any) => any) | undefined }): AxiosPromise;
diff --git a/package.json b/package.json
index a8e2dc3..cc4a5d4 100755
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
   "main": "dist/index.js",
   "jsnext:main": "dist/index.esm.js",
   "module": "dist/index.esm.js",
+  "types": "index.d.ts",
   "miniprogram": "dist/miniprogram",
   "sideEffects": false,
   "scripts": {
@@ -58,4 +59,4 @@
   "dependencies": {
     "axios": "^0.19.2"
   }
-}
\ No newline at end of file
+}