diff --git a/CHANGELOG.md b/CHANGELOG.md
index d44c975..f718bd0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change Log
 
+## [4.9.0](https://github.com/plivo/plivo-node/releases/tag/v4.8.0)(2020-08-25)
+-  Add Powerpack for MMS
+
 ## [4.8.0](https://github.com/plivo/plivo-node/releases/tag/v4.8.0)(2020-07-23)
 -  Add retries to multiple regions for voice requests.
 
diff --git a/lib/resources/powerpacks.js b/lib/resources/powerpacks.js
index e2706e0..f10c34e 100644
--- a/lib/resources/powerpacks.js
+++ b/lib/resources/powerpacks.js
@@ -75,6 +75,14 @@ export class Powerpack extends PlivoResource {
 			}
 		}
 
+		if (params.service != undefined) {
+			if (query == '') {
+				query = 'service=' + params.service;
+			} else {
+				query += '&service=' + params.service;
+			}
+		}
+
 		query = query + '&';
 
 		return query;
@@ -92,15 +100,21 @@ export class Powerpack extends PlivoResource {
 		let path = 'NumberPool/' + this.number_pool_id + '/Number/' + number + '/';
 		return super.customexecuteAction(path.toString().trim(), 'GET');
 	}
-	add_number(number) {
+	add_number(number, service = '') {
 		var params = {};
 		params['rent'] = 'false';
+		if (service !=  '') {
+			params['service'] = service
+		}
 		let path = 'NumberPool/' + this.number_pool_id + '/Number/' + number + '/';
 		return super.customexecuteAction(path.toString().trim(), 'POST', params);
 	}
-	add_tollfree(tollfree) {
+	add_tollfree(tollfree, service = '') {
 		var params = {};
 		params['rent'] = 'false';
+		if (service != '') {
+			params['service'] = service
+		}
 		let path = 'NumberPool/' + this.number_pool_id + '/Tollfree/' + tollfree + '/';
 		return super.customexecuteAction(path.toString().trim(), 'POST', params);
 	}
@@ -134,12 +148,18 @@ export class Powerpack extends PlivoResource {
 		let path = 'NumberPool/' + this.number_pool_id + '/Tollfree/';
 		return super.customexecuteAction(path.toString().trim(), 'GET', params);
 	}
-	find_shortcode(shortcode) {
+	find_shortcode(shortcode, service = '') {
 		let path = 'NumberPool/' + this.number_pool_id + '/Shortcode/' + shortcode + '/';
+		if (service != '') {
+			path = path + '&service=' + service
+		}
 		return super.customexecuteAction(path.toString().trim(), 'GET');
 	}
-	find_tollfree(tollfree) {
+	find_tollfree(tollfree, service = '') {
 		let path = 'NumberPool/' + this.number_pool_id + '/Tollfree/' + tollfree + '/';
+		if (service != '') {
+			path = path + '&service=' + service
+		}
 		return super.customexecuteAction(path.toString().trim(), 'GET');
 	}
 	buy_add_number(params) {
@@ -151,6 +171,9 @@ export class Powerpack extends PlivoResource {
 				if (params.country_iso2 != undefined) {
 					params['country_iso'] = params.country_iso2;
 				}
+				if (params.service != undefined) {
+					params['service'] = params.service;
+				}
 				var test = super.customexecuteGetNumberAction('PhoneNumber/', 'GET', params);
 				return test.then((val) => {
 					let path = 'NumberPool/' + this.number_pool_id + '/Number/' + val + '/';
@@ -229,6 +252,9 @@ export class Numbers extends PlivoResource {
 				if (params.country_iso2 != undefined) {
 					params['country_iso'] = params.country_iso2;
 				}
+				if (params.service != undefined) {
+					params['service'] = params.service;
+				}
 				var test = super.customexecuteGetNumberAction('PhoneNumber/', 'GET', params);
 				return test.then((val) => {
 					let path = 'NumberPool/' + this.number_pool_id + '/Number/' + val + '/';
@@ -294,6 +320,13 @@ export class Numbers extends PlivoResource {
 				query += '&offset=' + params.offset;
 			}
 		}
+		if (params.service != undefined) {
+			if (query == '') {
+				query = 'service=' + params.service;
+			} else {
+				query += '&service=' + params.service;
+			}
+		}
 
 		query = query + '&';
 
@@ -304,9 +337,12 @@ export class Numbers extends PlivoResource {
 		let path = 'NumberPool/' + this.number_pool_id + '/Number/' + number + '/';
 		return super.customexecuteAction(path.toString().trim(), 'GET');
 	}
-	add(number) {
+	add(number, service='') {
 		var params = {};
 		params['rent'] = 'false';
+		if (service != '') {
+			params['service'] = service
+		}
 		let path = 'NumberPool/' + this.number_pool_id + '/Number/' + number + '/';
 		return super.customexecuteAction(path.toString().trim(), 'POST', params);
 	}
diff --git a/package.json b/package.json
index c435957..494114d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "plivo",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "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": [