diff --git a/src/lib/managers/v2/index.ts b/src/lib/managers/v2/index.ts
index dccc84d..cc34e3b 100644
--- a/src/lib/managers/v2/index.ts
+++ b/src/lib/managers/v2/index.ts
@@ -5,6 +5,7 @@ export * from './simulateManager';
 export * from './entitiesManager';
 export * from './accountVerificationsManager';
 export * from './invoicesManager';
+export * from './linesManager';
 export * from './movementsManager';
 export * from './customersManager';
 export * from './checkoutSessionsManager';
@@ -12,5 +13,6 @@ export * from './paymentIntentsManager';
 export * from './paymentMethodsManager';
 export * from './productsManager';
 export * from './subscriptionsManager';
+export * from './subscriptionItemsManager';
 export * from './accountStatementsManager';
 export * from './onboardingsManager';
diff --git a/src/lib/managers/v2/invoicesManager.ts b/src/lib/managers/v2/invoicesManager.ts
index cf98225..d2cdf7a 100644
--- a/src/lib/managers/v2/invoicesManager.ts
+++ b/src/lib/managers/v2/invoicesManager.ts
@@ -1,7 +1,30 @@
+import { ResourceArguments } from '../../../types';
+import { Client } from '../../client';
 import { ManagerMixin } from '../../mixins';
 import { Invoice } from '../../resources/v2/invoice';
 
+import { LinesManager } from './linesManager';
+
 export class InvoicesManager extends ManagerMixin<Invoice> {
   static resource = 'invoice';
-  static methods = ['list', 'get'];
+  static methods = ['list', 'get', 'addLines', 'removeLines'];
+
+  lines: LinesManager;
+
+  constructor(path: string, client: Client) {
+    super(path, client);
+    this.lines = new LinesManager('/v2/invoices/{invoice_id}/lines', client);
+  }
+
+  addLines(invoiceId: string, args?: ResourceArguments): Promise<Invoice> {
+    const innerArgs = args || {};
+    const path = `${this.buildPath()}/${invoiceId}/add_lines`;
+    return this._create({ path_: path, ...innerArgs });
+  }
+
+  removeLines(invoiceId: string, args?: ResourceArguments): Promise<Invoice> {
+    const innerArgs = args || {};
+    const path = `${this.buildPath()}/${invoiceId}/remove_lines`;
+    return this._create({ path_: path, ...innerArgs });
+  }
 }
diff --git a/src/lib/managers/v2/linesManager.ts b/src/lib/managers/v2/linesManager.ts
new file mode 100644
index 0000000..cd8f3ed
--- /dev/null
+++ b/src/lib/managers/v2/linesManager.ts
@@ -0,0 +1,7 @@
+import { ManagerMixin } from '../../mixins';
+import { Line } from '../../resources/v2/line';
+
+export class LinesManager extends ManagerMixin<Line> {
+  static resource = 'line';
+  static methods = ['update'];
+}
diff --git a/src/lib/managers/v2/subscriptionItemsManager.ts b/src/lib/managers/v2/subscriptionItemsManager.ts
new file mode 100644
index 0000000..a164985
--- /dev/null
+++ b/src/lib/managers/v2/subscriptionItemsManager.ts
@@ -0,0 +1,14 @@
+import { ResourceArguments } from '../../../types';
+import { ManagerMixin } from '../../mixins';
+import { SubscriptionItem } from '../../resources/v2/subscriptionItem';
+
+export class SubscriptionItemsManager extends ManagerMixin<SubscriptionItem> {
+  static resource = 'subscription_item';
+  static methods = ['create', 'update', 'delete'];
+
+  create(args?: ResourceArguments): Promise<SubscriptionItem> {
+    const innerArgs = args || {};
+    const path = this.buildPath(innerArgs);
+    return this._create({ path_: path, ...innerArgs });
+  }
+}
diff --git a/src/lib/managers/v2/subscriptionsManager.ts b/src/lib/managers/v2/subscriptionsManager.ts
index 438f108..94c4ca2 100644
--- a/src/lib/managers/v2/subscriptionsManager.ts
+++ b/src/lib/managers/v2/subscriptionsManager.ts
@@ -1,10 +1,20 @@
 import { ResourceArguments } from '../../../types';
+import { Client } from '../../client';
 import { ManagerMixin } from '../../mixins';
 import { Subscription } from '../../resources/v2/subscription';
 
+import { SubscriptionItemsManager } from './subscriptionItemsManager';
+
 export class SubscriptionsManager extends ManagerMixin<Subscription> {
   static resource = 'subscription';
-  static methods = ['list', 'get', 'cancel'];
+  static methods = ['list', 'get', 'create', 'update', 'cancel'];
+
+  items: SubscriptionItemsManager;
+
+  constructor(path: string, client: Client) {
+    super(path, client);
+    this.items = new SubscriptionItemsManager('/v2/subscriptions/{subscription_id}/items', client);
+  }
 
   cancel(subscriptionId: string, args?: ResourceArguments): Promise<Subscription> {
     const innerArgs = args || {};
diff --git a/src/lib/resources/v2/index.ts b/src/lib/resources/v2/index.ts
index 21b30ec..2568a8a 100644
--- a/src/lib/resources/v2/index.ts
+++ b/src/lib/resources/v2/index.ts
@@ -5,12 +5,14 @@ export * from './entity';
 export * from './accountVerification';
 export * from './checkoutSession';
 export * from './invoice';
+export * from './line';
 export * from './movement';
 export * from './customer';
 export * from './paymentIntent';
 export * from './paymentMethod';
 export * from './product';
 export * from './subscription';
+export * from './subscriptionItem';
 export * from './accountStatement';
 export * from './onboarding';
 export * from './onboardingShareholder';
diff --git a/src/lib/resources/v2/line.ts b/src/lib/resources/v2/line.ts
new file mode 100644
index 0000000..d7d8cfd
--- /dev/null
+++ b/src/lib/resources/v2/line.ts
@@ -0,0 +1,4 @@
+import { ResourceMixin } from '../../mixins/resourceMixin';
+
+export class Line extends ResourceMixin<Line> {
+}
diff --git a/src/lib/resources/v2/subscriptionItem.ts b/src/lib/resources/v2/subscriptionItem.ts
new file mode 100644
index 0000000..b96c940
--- /dev/null
+++ b/src/lib/resources/v2/subscriptionItem.ts
@@ -0,0 +1,4 @@
+import { ResourceMixin } from '../../mixins/resourceMixin';
+
+export class SubscriptionItem extends ResourceMixin<SubscriptionItem> {
+}
diff --git a/src/spec/integration.spec.ts b/src/spec/integration.spec.ts
index 07a4d02..e7d2783 100644
--- a/src/spec/integration.spec.ts
+++ b/src/spec/integration.spec.ts
@@ -1293,6 +1293,45 @@ test('fintoc.v2.invoices.get()', async (t) => {
   t.is(invoice.url, `v2/invoices/${invoiceId}`);
 });
 
+test('fintoc.v2.invoices.addLines()', async (t) => {
+  const ctx: any = t.context;
+  const invoiceId = 'invoice_id';
+  const lines = [{
+    amount: 10000,
+    currency: 'CLP',
+    period_end: '2024-02-01',
+    period_start: '2024-01-01',
+    quantity: 1,
+  }];
+  const invoice = await ctx.fintoc.v2.invoices.addLines(invoiceId, { lines });
+
+  t.is(invoice.method, 'post');
+  t.is(invoice.url, `v2/invoices/${invoiceId}/add_lines`);
+});
+
+test('fintoc.v2.invoices.removeLines()', async (t) => {
+  const ctx: any = t.context;
+  const invoiceId = 'invoice_id';
+  const lines = ['il_line_id'];
+  const invoice = await ctx.fintoc.v2.invoices.removeLines(invoiceId, { lines });
+
+  t.is(invoice.method, 'post');
+  t.is(invoice.url, `v2/invoices/${invoiceId}/remove_lines`);
+});
+
+test('fintoc.v2.invoices.lines.update()', async (t) => {
+  const ctx: any = t.context;
+  const invoiceId = 'invoice_id';
+  const lineId = 'il_line_id';
+  const line = await ctx.fintoc.v2.invoices.lines.update(lineId, {
+    invoice_id: invoiceId,
+    quantity: 2,
+  });
+
+  t.is(line.method, 'patch');
+  t.is(line.url, `v2/invoices/${invoiceId}/lines/${lineId}`);
+});
+
 test('fintoc.v2.paymentIntents.list()', async (t) => {
   const ctx: any = t.context;
   const paymentIntents = await ctx.fintoc.v2.paymentIntents.list();
@@ -1387,6 +1426,68 @@ test('fintoc.v2.subscriptions.cancel()', async (t) => {
   t.is(subscription.url, `v2/subscriptions/${subscriptionId}/cancel`);
 });
 
+test('fintoc.v2.subscriptions.create()', async (t) => {
+  const ctx: any = t.context;
+  const subscriptionData = {
+    customer: 'cus_id',
+    items: [{ price: 'price_id', quantity: 1 }],
+  };
+  const subscription = await ctx.fintoc.v2.subscriptions.create(subscriptionData);
+
+  t.is(subscription.method, 'post');
+  t.is(subscription.url, 'v2/subscriptions');
+  t.is(subscription.json.customer, subscriptionData.customer);
+});
+
+test('fintoc.v2.subscriptions.update()', async (t) => {
+  const ctx: any = t.context;
+  const subscriptionId = 'subscription_id';
+  const updateData = {
+    trial_end: '2024-12-31T00:00:00Z',
+  };
+  const subscription = await ctx.fintoc.v2.subscriptions.update(subscriptionId, updateData);
+
+  t.is(subscription.method, 'patch');
+  t.is(subscription.url, `v2/subscriptions/${subscriptionId}`);
+});
+
+test('fintoc.v2.subscriptions.items.create()', async (t) => {
+  const ctx: any = t.context;
+  const subscriptionId = 'subscription_id';
+  const item = await ctx.fintoc.v2.subscriptions.items.create({
+    subscription_id: subscriptionId,
+    price_data: { product: 'prod_id', amount: 10000, currency: 'CLP' },
+    quantity: 1,
+  });
+
+  t.is(item.method, 'post');
+  t.is(item.url, `v2/subscriptions/${subscriptionId}/items`);
+});
+
+test('fintoc.v2.subscriptions.items.update()', async (t) => {
+  const ctx: any = t.context;
+  const subscriptionId = 'subscription_id';
+  const itemId = 'si_item_id';
+  const item = await ctx.fintoc.v2.subscriptions.items.update(itemId, {
+    subscription_id: subscriptionId,
+    quantity: 3,
+  });
+
+  t.is(item.method, 'patch');
+  t.is(item.url, `v2/subscriptions/${subscriptionId}/items/${itemId}`);
+});
+
+test('fintoc.v2.subscriptions.items.delete()', async (t) => {
+  const ctx: any = t.context;
+  const subscriptionId = 'subscription_id';
+  const itemId = 'si_item_id';
+  const deletedIdentifier = await ctx.fintoc.v2.subscriptions.items.delete(itemId, {
+    subscription_id: subscriptionId,
+  });
+
+  t.is(deletedIdentifier, itemId);
+});
+
 test('fintoc.v2.products.list()', async (t) => {
   const ctx: any = t.context;
   const products = await ctx.fintoc.v2.products.list();