diff --git a/lib/base.js b/lib/base.js
index 1048cbf..3ed6040 100644
--- a/lib/base.js
+++ b/lib/base.js
@@ -1,5 +1,4 @@
 import { extend } from './utils/common.js';
-import axios from 'axios';
 
 let actionKey = Symbol('api action');
 let klassKey = Symbol('constructor');
diff --git a/lib/resources/call.js b/lib/resources/call.js
index a736e67..fc9a324 100644
--- a/lib/resources/call.js
+++ b/lib/resources/call.js
@@ -495,7 +495,7 @@ export class CallInterface extends PlivoResourceInterface {
      * @promise {object[]} returns list of Call Object
      * @fail {Error} returns Error
      */
-    list(params) {
+    list(params = {}) {
         params.isVoiceRequest = 'true';
         let client = this[clientKey];
 
diff --git a/package.json b/package.json
index 2ba34c4..9ff90b7 100644
--- a/package.json
+++ b/package.json
@@ -58,11 +58,10 @@
     "test": "gulp"
   },
   "dependencies": {
+    "@types/node": "^14.14.14",
     "axios": "^0.19.2",
     "base-64": "^0.1.0",
     "build-url": "^1.0.10",
-    "got": "^11.8.1",
-    "querystring": "^0.2.0",
     "jsonwebtoken": "^8.5.1",
     "lodash": "^4.17.4",
     "querystring": "^0.2.0",