diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7cc6b8c..bf298a96 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change Log
 
+## [v4.22.0](https://github.com/plivo/plivo-node/tree/v4.22.0) (2021-08-17)
+- Fix [add numbers to a powerpack](https://www.plivo.com/docs/sms/api/numberpool/#add-a-number) API by reverting retrievable object responses support for [Retrieve a Power pack API](https://www.plivo.com/docs/sms/api/powerpack#retrieve-a-powerpack).
+
 ## [v4.21.0](https://github.com/plivo/plivo-node/tree/v4.21.0) (2021-08-05)
 - Fixed a Typescript warning about base interpretation.
 - Add retrievable object responses support for [Retrieve a Power pack API](https://www.plivo.com/docs/sms/api/powerpack#retrieve-a-powerpack).
diff --git a/lib/resources/powerpacks.js b/lib/resources/powerpacks.js
index c04149bb..2df1d4c9 100644
--- a/lib/resources/powerpacks.js
+++ b/lib/resources/powerpacks.js
@@ -40,22 +40,6 @@ export class CreatePowerpackResponse {
     }
 }
 
-export class RetrievePowerpack {
-    constructor(params) {
-            params = params || {};
-            this.apiId = params.apiId;
-            this.applicationId = params.applicationId;
-            this.applicationType = params.applicationType;
-            this.createdOn = params.createdOn;
-            this.localConnect = params.localConnect;
-            this.name = params.name;
-            this.numberPool = params.numberPool;
-            this.numberPriority = params.numberPriority;
-            this.stickySender = params.stickySender;
-            this.uuid = params.uuid;
-        }
-}
-
 export class UpdatePowerpackResponse {
     constructor(params) {
         params = params || {};
@@ -473,7 +457,6 @@ export class Powerpack extends PlivoResource {
    * @param {string} [params.sticky_sender]
    * @param {string} [params.local_connect]
    * @param {object} [params.number_priority]
-
    * @promise {object} return {@link Powerpack} object
    * @fail {Error} return Error
    */
@@ -713,31 +696,8 @@ export class PowerpackInterface extends PlivoResourceInterface {
      * @fail {Error} return Error
      */
      get(uuid) {
-        let errors = validate([{
-            field: 'uuid',
-            value: uuid,
-            validators: ['isRequired']
-        }]);
-
-        if (errors) {
-            return errors;
-        }
-
-        let client = this[clientKey];
-        return new Promise((resolve, reject) => {
-            if (action !== '' && !uuid) {
-                reject(new Error(this[idKey] + ' must be set'));
-            }
-            client('GET', action + (uuid ? uuid + '/' : ''))
-                .then(response => {
-                    resolve(new RetrievePowerpack(response.body, client));
-                })
-                .catch(error => {
-                    reject(error);
-                });
-        });
+        return super.get(uuid);
     }
-    
     /**
      * create Powerpack
      * @method
@@ -816,4 +776,4 @@ export class PowerpackInterface extends PlivoResourceInterface {
     list(params) {
         return super.list(params);
     }
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index a471bda6..e76ea7e1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "plivo",
-  "version": "4.21.0",
+  "version": "4.22.0",
   "description": "A Node.js SDK to make voice calls and send SMS using Plivo and to generate Plivo XML",
   "homepage": "https://github.com/plivo/plivo-node",
   "files": [