diff --git a/CHANGELOG.MD b/CHANGELOG.MD
index 00499d20..24a93b8a 100644
--- a/CHANGELOG.MD
+++ b/CHANGELOG.MD
@@ -1,5 +1,11 @@
 # Releases
 
+## VERSION 2.1.0
+
+- Add `X-Expand-Response-Nodes` header to request options
+- Add `X-Card-Validation` header to request options
+- Add `X-Meli-Session-Id` header to request options
+
 ## VERSION 2.0.15
 
 - Include `reference_id` in Data in Payment Method in Payment
diff --git a/package.json b/package.json
index beb3ec9a..08f9d491 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mercadopago",
-  "version": "2.0.15",
+  "version": "2.1.0",
   "description": "Mercadopago SDK for Node.js",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/types.ts b/src/types.ts
index f7b664c8..240273aa 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,27 +1,30 @@
 export declare type Config = {
-  accessToken: string;
-  options?: Options;
+	accessToken: string;
+	options?: Options;
 };
 
 export declare type Options = {
-  timeout?: number;
-  idempotencyKey?: string;
-  plataformId?: string;
-  integratorId?: string;
-  corporationId?: string;
+	timeout?: number;
+	idempotencyKey?: string;
+	plataformId?: string;
+	integratorId?: string;
+	corporationId?: string;
+	meliSessionId?: string;
+	expandResponseNodes?: string;
+	cardValidation?: string;
 };
 
 export declare interface SearchOptions {
-  limit?: number;
-  offset?: number;
-  [key: string]: string | number;
+	limit?: number;
+	offset?: number;
+	[key: string]: string | number;
 }
 
 export declare interface ApiResponse {
-  api_response: ResponseFields;
+	api_response: ResponseFields;
 }
 
 export declare type ResponseFields = {
-  status: number;
-  headers: [string, string[]];
+	status: number;
+	headers: [string, string[]];
 };
diff --git a/src/utils/config/index.ts b/src/utils/config/index.ts
index 499f05c7..8456da54 100644
--- a/src/utils/config/index.ts
+++ b/src/utils/config/index.ts
@@ -5,7 +5,7 @@ export class AppConfig {
 	static readonly BASE_URL = 'https://api.mercadopago.com';
 	static readonly PRODUCT_ID = 'bc32b6ntrpp001u8nhkg';
 
-	static SDK_VERSION = '2.0.15';
+	static SDK_VERSION = '2.1.0';
 
 	static readonly Headers = {
 		AUTHORIZATION: 'Authorization',
@@ -16,7 +16,10 @@ export class AppConfig {
 		TRACKING_ID: 'X-Tracking-Id',
 		CORPORATION_ID: 'X-Corporation-Id',
 		INTEGRATOR_ID: 'X-Integrator-Id',
-		PLATFORM_ID: 'X-Platform-Id'
+		PLATFORM_ID: 'X-Platform-Id',
+		MELI_SESSION_ID: 'X-Meli-Session-Id',
+		EXPAND_RESPONSE_NODES: 'X-Expand-Response-Nodes',
+		CARD_VALIDATION: 'X-Card-Validation',
 	};
 
 	static getNodeVersion(): string {
@@ -32,7 +35,7 @@ export class AppConfig {
 	}
 
 	static getTrackingId(): string {
-		return 'platform:' + this.getNodeVersion().substring(0, this.getNodeVersion().indexOf('.')) + '|' + this.getNodeVersion() + ',type:SDK'+ this.SDK_VERSION + ',so;';
+		return 'platform:' + this.getNodeVersion().substring(0, this.getNodeVersion().indexOf('.')) + '|' + this.getNodeVersion() + ',type:SDK' + this.SDK_VERSION + ',so;';
 	}
 
 	static getUserAgent(): string {
diff --git a/src/utils/restClient/index.ts b/src/utils/restClient/index.ts
index 596c2012..bcb37a7c 100644
--- a/src/utils/restClient/index.ts
+++ b/src/utils/restClient/index.ts
@@ -5,8 +5,8 @@ import { v4 as uuidv4 } from 'uuid';
 import type { Options } from '@src/types';
 
 interface RestClientConfig extends Options {
-  queryParams?: Record<string, string | number>;
-  retries?: number;
+	queryParams?: Record<string, string | number>;
+	retries?: number;
 }
 
 class RestClient {
@@ -66,6 +66,9 @@ class RestClient {
 			corporationId,
 			integratorId,
 			plataformId,
+			meliSessionId,
+			expandResponseNodes,
+			cardValidation,
 			...customConfig
 		} = config || {};
 
@@ -79,6 +82,9 @@ class RestClient {
 			...(corporationId ? { [AppConfig.Headers.CORPORATION_ID]: corporationId } : {}),
 			...(integratorId ? { [AppConfig.Headers.INTEGRATOR_ID]: integratorId } : {}),
 			...(plataformId ? { [AppConfig.Headers.PLATFORM_ID]: plataformId } : {}),
+			...(meliSessionId ? { [AppConfig.Headers.MELI_SESSION_ID]: meliSessionId } : {}),
+			...(expandResponseNodes ? { [AppConfig.Headers.EXPAND_RESPONSE_NODES]: expandResponseNodes } : {}),
+			...(cardValidation ? { [AppConfig.Headers.CARD_VALIDATION]: cardValidation } : {}),
 		};
 
 		if (method && method !== 'GET') {
diff --git a/src/utils/restClient/restClient.spec.ts b/src/utils/restClient/restClient.spec.ts
index 08c639ea..97c01268 100644
--- a/src/utils/restClient/restClient.spec.ts
+++ b/src/utils/restClient/restClient.spec.ts
@@ -83,8 +83,8 @@ describe('RestClient', () => {
 		expect(fetch).toHaveBeenCalledTimes(retries);
 		expect(response).toEqual({
 			success: true,
-			api_response:  {
-				headers:  {
+			api_response: {
+				headers: {
 					'Content-Type': [
 						'text/plain;charset=UTF-8',
 					],
@@ -98,12 +98,17 @@ describe('RestClient', () => {
 		(fetch as jest.MockedFunction<typeof fetch>).mockResolvedValue(
 			new Response(JSON.stringify({ success: true }), { url: 'url', status: 200, statusText: 'OK' })
 		);
-
 		const customHeaders = {
 			Authorization: 'Bearer Token123',
 		};
 		const endpoint = '/test-custom-headers';
-		await RestClient.fetch(endpoint, { headers: customHeaders });
+
+		await RestClient.fetch(endpoint, {
+			headers: customHeaders,
+			expandResponseNodes: 'gateway.reference',
+			cardValidation: 'card_validation',
+			meliSessionId: 'device_id',
+		});
 
 		expect(fetch).toHaveBeenCalledWith(expect.any(String), {
 			method: 'GET',
@@ -114,6 +119,9 @@ describe('RestClient', () => {
 				'User-Agent': expect.any(String),
 				'X-Product-Id': expect.any(String),
 				'X-Tracking-Id': expect.any(String),
+				'X-Meli-Session-Id': 'device_id',
+				'X-Expand-Response-Nodes': 'gateway.reference',
+				'X-Card-Validation': 'card_validation',
 			},
 		});
 	});
@@ -181,8 +189,8 @@ describe('RestClient', () => {
 		expect(fetch).toHaveBeenCalledTimes(4);
 		expect(response).toEqual({
 			success: true,
-			api_response:  {
-				headers:  {
+			api_response: {
+				headers: {
 					'Content-Type': [
 						'text/plain;charset=UTF-8',
 					],