diff --git a/README.md b/README.md
index c52d8f1..f520a07 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Full API documentation available at http://docs.openpay.mx/.
 //class
 var Openpay = require('openpay');
 //instantiation
-var openpay = new Openpay(' your merchant id ', ' your private key ', [ isProduction ]);
+var openpay = new Openpay(' your merchant id ', ' your private key ','public IP address of the client',"mx", [ isProduction ]);
 //use the api
 openpay.< resource_name >.< method_name >( ... )
 ```
@@ -92,7 +92,7 @@ Before use the library will be necessary to set up your Merchant ID and Private
 
 ```js
 var Openpay = require('openpay');
-var openpay = new Openpay('your merchant id', 'your private key', 'mx', false);
+var openpay = new Openpay('your merchant id', 'your private key','public IP address of the client', 'mx', false);
 openpay.setTimeout(30000);
 ```
 
@@ -102,6 +102,7 @@ In addition, you can set the merchant id, private key, and the mode like this
 openpay.setMerchantId(' your merchant id ');
 openpay.setPrivateKey(' your private key ');
 openpay.setProductionReady(true)
+openpay.setPublicIp('138.84.62.109')
 ```
 
 Once configured the library, you can use it to interact with Openpay API services.
diff --git a/lib/openpay.js b/lib/openpay.js
index 9481603..6db36d4 100644
--- a/lib/openpay.js
+++ b/lib/openpay.js
@@ -8,16 +8,21 @@ Openpay.SANDBOX_URL = 'https://sandbox-api.openpay.mx';
 Openpay.SANDBOX_API_VERSION = '/v1/';
 
 
-function Openpay(merchantId, privateKey, countryCode = 'mx', isProductionReady) {
+function Openpay(merchantId, privateKey, publicIp, countryCode = 'mx', isProductionReady) {
+    if (!publicIp) {
+        throw new Error("Public Ip can't be null or empty");
+    }
     this.merchantId = merchantId;
     this.privateKey = privateKey;
     this.isSandbox = isProductionReady ? false : true;
     this.timeout = 90000;
+    this.publicIp = publicIp;
     this.define({
         isSandbox: this.isSandbox,
         privateKey: this.privateKey,
         merchantId: this.merchantId,
-        timeout: this.timeout
+        timeout: this.timeout,
+        publicIp: this.publicIp,
     });
     this.setBaseUrl(countryCode);
 
@@ -30,6 +35,10 @@ function Openpay(merchantId, privateKey, countryCode = 'mx', isProductionReady)
         this.privateKey = privateKey;
         this._reDefine();
     };
+    this.setPublicIp = function (publicIp) {
+        this.publicIp = publicIp;
+        this._reDefine();
+    };
 
     this.setProductionReady = function (isProductionReady) {
         this.isSandbox = !isProductionReady;
@@ -46,7 +55,8 @@ function Openpay(merchantId, privateKey, countryCode = 'mx', isProductionReady)
             isSandbox: this.isSandbox,
             privateKey: this.privateKey,
             merchantId: this.merchantId,
-            timeout: this.timeout
+            timeout: this.timeout,
+            publicIp:this.publicIp
         });
     };
 }
@@ -956,7 +966,10 @@ var sendRequest = function (data) {
         contentType: 'json',
         timeout: data.timeout,
         data: data.requestData.json,
-        dataType: 'json'
+        dataType: 'json',
+        headers: {
+            'X-Forwarded-For': data.publicIp
+        }
     };
 
     urllib.request(url, options, function (err, body, res) {
@@ -975,7 +988,10 @@ var sendStoreRequest = function (data) {
         contentType: 'json',
         timeout: data.timeout,
         data: data.requestData.json,
-        dataType: 'json'
+        dataType: 'json',
+        headers: {
+            'X-Forwarded-For': data.publicIp
+        }
     };
 
     urllib.request(url, options, function (err, body, res) {
diff --git a/test/bank-accounts.test.js b/test/bank-accounts.test.js
index c818470..43b8c59 100644
--- a/test/bank-accounts.test.js
+++ b/test/bank-accounts.test.js
@@ -2,7 +2,7 @@ var assert = require('assert');
 var _ = require('underscore');
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(20000);
 var enableLogging = true;
 var customerId = '';
diff --git a/test/cards.test.js b/test/cards.test.js
index 6537ec0..8e03541 100644
--- a/test/cards.test.js
+++ b/test/cards.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/charges_test.js b/test/charges_test.js
index 0236118..94e4681 100644
--- a/test/charges_test.js
+++ b/test/charges_test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/colombia/cards.test.colombia.js b/test/colombia/cards.test.colombia.js
index eb199d0..7229c9e 100644
--- a/test/colombia/cards.test.colombia.js
+++ b/test/colombia/cards.test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/colombia/charges_test.colombia.js b/test/colombia/charges_test.colombia.js
index 0ded2e8..a3735d2 100644
--- a/test/colombia/charges_test.colombia.js
+++ b/test/colombia/charges_test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/colombia/clients_test.colombia.js b/test/colombia/clients_test.colombia.js
index 97750c8..1f7119e 100644
--- a/test/colombia/clients_test.colombia.js
+++ b/test/colombia/clients_test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(10000);
 var enableLogging = true;
 
diff --git a/test/colombia/plans.test.colombia.js b/test/colombia/plans.test.colombia.js
index c9548d6..24411fa 100644
--- a/test/colombia/plans.test.colombia.js
+++ b/test/colombia/plans.test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(20000);
 var enableLogging = true;
 
@@ -14,7 +14,8 @@ var newPlan = {
     "name": "Curso de ingles",
     "repeat_unit": "month",
     "trial_days": "30",
-    "repeat_every": "1"
+    "repeat_every": "1",
+    "currency":"COP",
 }
 describe('Plans testing', function () {
     var plan;
@@ -30,7 +31,7 @@ describe('Plans testing', function () {
 
     describe('Update plan', function () {
         it('should return statusCode 200||201', function (done) {
-            const updatePlan = {name:"plan updated"}
+            const updatePlan = {name:"plan updated"};
             openpay.plans.update(plan.id, updatePlan, function (error, body, response) {
                 assert.equal(response.statusCode === 200 || response.statusCode === 201, true, '');
                 done();
diff --git a/test/colombia/pse_test.colombia.js b/test/colombia/pse_test.colombia.js
index 15f047d..21b5d80 100644
--- a/test/colombia/pse_test.colombia.js
+++ b/test/colombia/pse_test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/colombia/subscriptions.test.colombia.js b/test/colombia/subscriptions.test.colombia.js
index dc26ec1..8a55985 100644
--- a/test/colombia/subscriptions.test.colombia.js
+++ b/test/colombia/subscriptions.test.colombia.js
@@ -2,7 +2,7 @@ var assert = require('assert');
 var _ = require('underscore');
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
@@ -40,7 +40,7 @@ describe('Plans testing', function () {
     var customer;
     var subscription;
 
-    describe('Create plan', function () {
+    it('Create plan', function () {
         it('should return statusCode 200||201', function (done) {
             openpay.plans.create(newPlan, function (error, body, response) {
                 plan = body;
@@ -50,7 +50,7 @@ describe('Plans testing', function () {
         });
     });
 
-    describe('Create customer', function () {
+    it('Create customer', function () {
         it('create customer for test', function (done) {
             openpay.customers.create(testCreateCustomer, function (error, body, response) {
                 customer = body;
@@ -60,9 +60,9 @@ describe('Plans testing', function () {
     });
 
 
-    describe('Create subscription', function () {
-        subscription.plan_id = plan?.id;
+    it('Create subscription', function () {
         it('should return statusCode 200||201', function (done) {
+            subscription.plan_id = plan.id;
             openpay.customers.subscriptions.create(customer.id, subscription, function (error, body, response) {
                 subscription = body;
                 assert.equal(response.statusCode === 200 || response.statusCode === 201, true, '');
@@ -71,7 +71,7 @@ describe('Plans testing', function () {
         });
     });
 
-    describe('Update subscription', function () {
+    it('Update subscription', function () {
         it('should return statusCode 200||201', function (done) {
             const updateSubscription = {trial_end_date: "2021-12-12"}
             openpay.customers.subscriptions.update(subscription.id, updateSubscription, function (error, body, response) {
@@ -81,7 +81,7 @@ describe('Plans testing', function () {
         });
     });
 
-    describe('Get subscription', function () {
+    it('Get subscription', function () {
         it('should return statusCode 200||201', function (done) {
             openpay.customers.subscriptions.get(customer.id, subscription.id, function (error, body, response) {
                 assert.equal(response.statusCode === 200 || response.statusCode === 201, true, '');
@@ -91,7 +91,7 @@ describe('Plans testing', function () {
     });
 
 
-    describe('subscription List', function () {
+    it('subscription List', function () {
         it('should return statusCode 200||201', function (done) {
             var searchParams = {
                 'limit': 10
@@ -103,7 +103,7 @@ describe('Plans testing', function () {
         });
     });
 
-    describe('Cancell subscription', function () {
+    it('Cancell subscription', function () {
         it('should return statusCode 200||201', function (done) {
             openpay.customers.subscriptions.delete(subscription.id, function (error, body, response) {
                 assert.equal(response.statusCode === 200 || response.statusCode === 201 || response.statusCode === 204, true, '');
diff --git a/test/colombia/tokens_test.colombia.js b/test/colombia/tokens_test.colombia.js
index d8b8389..63682c6 100644
--- a/test/colombia/tokens_test.colombia.js
+++ b/test/colombia/tokens_test.colombia.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(20000);
 var enableLogging = true;
 
diff --git a/test/colombia/webhooks_test.colombia.js b/test/colombia/webhooks_test.colombia.js
index 6f728b1..f75312d 100644
--- a/test/colombia/webhooks_test.colombia.js
+++ b/test/colombia/webhooks_test.colombia.js
@@ -3,12 +3,12 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a', 'co', false);
+var openpay = new Openpay('mwf7x79goz7afkdbuyqd', 'sk_94a89308b4d7469cbda762c4b392152a',"138.85.61.94", 'co', false);
 openpay.setTimeout(20000);
 var enableLogging = true;
 
 const newWebhook = {
-    "url": "https://webhook.site/ab854ec2-2ac1-423b-9c0b-8502fd056cc9",
+    "url": "https://webhook.site/fbabe962-95c5-475c-9925-9f769ac3bc7e",
     "user": "juanito",
     "password": "passjuanito",
     "event_types": [
diff --git a/test/customers_test.js b/test/customers_test.js
index 7154196..48f2bda 100644
--- a/test/customers_test.js
+++ b/test/customers_test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('gdntnaxvkcdviesgaxem', 'sk_b97e606487d34b44ab66e03d5bd14747');
+var openpay = new Openpay('gdntnaxvkcdviesgaxem', 'sk_b97e606487d34b44ab66e03d5bd14747',"138.85.61.94");
 openpay.setTimeout(10000);
 var enableLogging = true;
 
diff --git a/test/fees.test.js b/test/fees.test.js
index 8202aef..e06b111 100644
--- a/test/fees.test.js
+++ b/test/fees.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(2000);
 var enableLogging = true;
 
diff --git a/test/group_test.js b/test/group_test.js
index 0aead65..790c330 100644
--- a/test/group_test.js
+++ b/test/group_test.js
@@ -5,7 +5,7 @@ var urllib = require('urllib');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('gdntnaxvkcdviesgaxem', 'sk_b97e606487d34b44ab66e03d5bd14747');
+var openpay = new Openpay('gdntnaxvkcdviesgaxem', 'sk_b97e606487d34b44ab66e03d5bd14747',"138.85.61.94");
 openpay.setTimeout(10000);
 
 var enableLogging = true;
@@ -278,7 +278,7 @@ describe('Testing group API', function(){
     });
     describe('Update subscription', function(){
       it('should return statusCode 200', function (done){
-        openpay.groups.customers.subscriptions.update(merchantId, newlyCreatedCustomerId, newlyCreatedSubscriptionId, {"trial_end_date": "2022-02-11"}, function (error, body, response){
+        openpay.groups.customers.subscriptions.update(merchantId, newlyCreatedCustomerId, newlyCreatedSubscriptionId, {"trial_end_date": "2025-02-11"}, function (error, body, response){
           printLog(response.statusCode, body, error);
           assert.equal(response.statusCode, 200, '');
           done();
diff --git a/test/payouts_test.js b/test/payouts_test.js
index 35a8055..190954e 100644
--- a/test/payouts_test.js
+++ b/test/payouts_test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(20000);
 var enableLogging = true;
 
diff --git a/test/peru/cards.pe.test.js b/test/peru/cards.pe.test.js
index 5c1e9a4..961b904 100644
--- a/test/peru/cards.pe.test.js
+++ b/test/peru/cards.pe.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.84.62.90",'pe',false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 const card = {
@@ -137,7 +137,7 @@ describe('get cards', function () {
 describe('delete card', function () {
     it('create customer', function (done) {
         var searchParams = {
-            'creation[gte]': '2021-01-01',
+            'creation[gte]': '2024-09-03',
             'limit': 1
         };
         openpay.customers.list(searchParams, function (error, body, response) {
diff --git a/test/peru/charges.pe.test.js b/test/peru/charges.pe.test.js
index 29bed50..1a2aaba 100644
--- a/test/peru/charges.pe.test.js
+++ b/test/peru/charges.pe.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.85.61.94",'pe',false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/peru/checkouts.pe.test.js b/test/peru/checkouts.pe.test.js
index 8eff18c..7b6b2bd 100644
--- a/test/peru/checkouts.pe.test.js
+++ b/test/peru/checkouts.pe.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.85.61.94",'pe',false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/peru/customers.pe.test.js b/test/peru/customers.pe.test.js
index fb950e5..ce05aac 100644
--- a/test/peru/customers.pe.test.js
+++ b/test/peru/customers.pe.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.85.61.94",'pe',false);
 openpay.setTimeout(10000);
 var enableLogging = true;
 const customer = {
diff --git a/test/peru/tokens.pe.test.js b/test/peru/tokens.pe.test.js
index 54a146b..4e75510 100644
--- a/test/peru/tokens.pe.test.js
+++ b/test/peru/tokens.pe.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.85.61.94",'pe',false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 
diff --git a/test/peru/webhooks.pe.test.js b/test/peru/webhooks.pe.test.js
index 3cc658a..35d8f79 100644
--- a/test/peru/webhooks.pe.test.js
+++ b/test/peru/webhooks.pe.test.js
@@ -3,11 +3,11 @@ var _ = require('underscore');
 
 var Openpay = require('../../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', 'pe',false);
+var openpay = new Openpay('m3cji4ughukthjcsglv0', 'sk_f934dfe51645483e82106301d985a4f6', "138.85.61.94",'pe',false);
 openpay.setTimeout(30000);
 var enableLogging = true;
 const webhook = {
-    "url": "https://webhook.site/dffe8335-b0bb-493f-a38d-3e61b711bd6a", // Cambiar por URL válida
+    "url": "https://webhook.site/fbabe962-95c5-475c-9925-9f769ac3bc7e", // Cambiar por URL válida
     "user": "juanito",
     "password": "passjuanito",
     "event_types": [
diff --git a/test/plans.test.js b/test/plans.test.js
index f02e9b6..b67c06a 100644
--- a/test/plans.test.js
+++ b/test/plans.test.js
@@ -3,7 +3,7 @@ var _ = require('underscore');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(20000);
 var enableLogging = true;
 
diff --git a/test/subscriptions.test.js b/test/subscriptions.test.js
index e4b093d..9ff5b9c 100644
--- a/test/subscriptions.test.js
+++ b/test/subscriptions.test.js
@@ -2,7 +2,7 @@ var assert = require('assert');
 var _ = require('underscore');
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(30000);
 var enableLogging = true;
 var testCreateCustomer = {
diff --git a/test/test.js b/test/test.js
index 973dca6..2ba7672 100644
--- a/test/test.js
+++ b/test/test.js
@@ -4,7 +4,7 @@ var urllib = require('urllib');
 
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905','138.85.61.94');
 openpay.setTimeout(10000);
 
 var enableLogging = true;
@@ -44,7 +44,7 @@ describe('Testing whole API', function(){
 	  var webhook;
 	  var webhook_params = {
         // Update the requestbin url here. Last change: Feb 3, 2021
-			  'url' : 'https://opey-requestbin.herokuapp.com/12i2q011',
+			  'url' : 'https://webhook.site/fbabe962-95c5-475c-9925-9f769ac3bc7e',
 			  'event_types' : [
 			    'charge.refunded',
 			    'charge.failed',
@@ -831,7 +831,7 @@ describe('Testing whole API', function(){
         });
         describe('Update subscription', function () {
             it('should return statusCode 200', function (done) {
-                openpay.customers.subscriptions.update(newlyCreatedCustomerId, newlyCreatedSubscriptionId, {"trial_end_date": "2022-02-11"}, function (error, body, response) {
+                openpay.customers.subscriptions.update(newlyCreatedCustomerId, newlyCreatedSubscriptionId, {"trial_end_date": "2025-02-11"}, function (error, body, response) {
                     printLog(response.statusCode, body, error);
                     assert.equal(response.statusCode, 200, '');
                     done();
@@ -897,7 +897,23 @@ describe('Testing whole API', function(){
             });
         });
     });
+    describe('Openpay', function() {
+        describe('constructor', function() {
+            it('should throw error when publicIp is null', function() {
+                assert.throws(() => new Openpay('merchantId', 'privateKey', null, 'mx', false),
+                    new Error("Public Ip can't be null or empty"));
+            });
+
+            it('should throw error when publicIp is empty', function() {
+                assert.throws(() => new Openpay('merchantId', 'privateKey', '', 'mx', false),
+                    new Error("Public Ip can't be null or empty"));
+            });
 
+            it('should not throw error when publicIp is provided', function() {
+                assert.doesNotThrow(() => new Openpay('merchantId', 'privateKey', '127.0.0.1', 'mx', false));
+            });
+        });
+    });
 });
 
 
diff --git a/test/transfers.test.js b/test/transfers.test.js
index c18481b..c3422b3 100644
--- a/test/transfers.test.js
+++ b/test/transfers.test.js
@@ -2,7 +2,7 @@ var assert = require('assert');
 var _ = require('underscore');
 var Openpay = require('../lib/openpay');
 /*Sandbox*/
-var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905');
+var openpay = new Openpay('m1qp3av1ymcfufkuuoah', 'sk_ed05f1de65fa4a67a3d3056a4efa2905',"138.85.61.94");
 openpay.setTimeout(3000)
 
 var enableLogging = true;