diff --git a/package.json b/package.json
index 2acec7a0..f505100f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@duffel/api",
-  "version": "3.3.0",
+  "version": "4.0.0",
   "description": "Javascript client library for the Duffel API",
   "main": "dist/index.js",
   "module": "dist/index.es.js",
diff --git a/src/Vault/Cards/Cards.spec.ts b/src/Payments/Cards/Cards.spec.ts
similarity index 78%
rename from src/Vault/Cards/Cards.spec.ts
rename to src/Payments/Cards/Cards.spec.ts
index e5318801..e42dd9e6 100644
--- a/src/Vault/Cards/Cards.spec.ts
+++ b/src/Payments/Cards/Cards.spec.ts
@@ -10,8 +10,8 @@ describe('Cards', () => {
   it('should create a card record when `create` is called', async () => {
     const MOCK_ID = 'tcd_00009hthhsUZ8W4LxQgkjb'
     nock(/(.*)/)
-      .post('/vault/cards')
-      .reply(200, { data: { id: MOCK_ID, liveMode: false } })
+      .post('/payments/cards')
+      .reply(200, { data: { id: MOCK_ID, liveMode: false, unavailableAt: '2024-01-01T00:00:00', brand: 'visa', multiUse: false, last4Digits: '4242' } })
 
     const response = await duffel.cards.create({
       address_city: 'London',
@@ -25,6 +25,7 @@ describe('Cards', () => {
       name: 'Neil Armstrong',
       number: '4242424242424242',
       cvc: '123',
+      multi_use: false,
     })
     expect(response.data.id).toBe(MOCK_ID)
   })
diff --git a/src/Vault/Cards/Cards.ts b/src/Payments/Cards/Cards.ts
similarity index 87%
rename from src/Vault/Cards/Cards.ts
rename to src/Payments/Cards/Cards.ts
index 07f02b5a..5c231a8a 100644
--- a/src/Vault/Cards/Cards.ts
+++ b/src/Payments/Cards/Cards.ts
@@ -56,11 +56,19 @@ interface CardParameters {
    * The card verification code
    */
   cvc: string
+  /**
+   * Set to true to indicate that this card can be used multiple times
+   */
+  multi_use: boolean
 }
 
 interface CardRecord {
   id: string
   live_mode: boolean
+  multi_use: boolean
+  unavailble_at: string
+  brand: string
+  last_4_digits: string
 }
 
 export class Cards extends Resource {
@@ -72,7 +80,7 @@ export class Cards extends Resource {
   // basePath must be 'https://api.duffel.cards'
   constructor(client: Client) {
     super(client)
-    this.path = 'vault/cards'
+    this.path = 'payments/cards'
   }
 
   /**
diff --git a/src/Vault/Cards/index.ts b/src/Payments/Cards/index.ts
similarity index 100%
rename from src/Vault/Cards/index.ts
rename to src/Payments/Cards/index.ts
diff --git a/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.spec.ts b/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.spec.ts
new file mode 100644
index 00000000..09451037
--- /dev/null
+++ b/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.spec.ts
@@ -0,0 +1,24 @@
+import nock from 'nock'
+import { Duffel } from '../../index'
+
+const duffel = new Duffel({ token: 'mockToken' })
+describe('ThreeDSecureSessions', () => {
+  afterEach(() => {
+    nock.cleanAll()
+  })
+
+  it('should create a 3DS session record when `create` is called', async () => {
+    const MOCK_ID = '3ds_00009hthhsUZ8W4LxQgkjb'
+    nock(/(.*)/)
+      .post('/payments/three_d_secure_sessions')
+      .reply(200, { data: { id: MOCK_ID, liveMode: false, expiresAt: '2024-01-01T00:00:00', status: 'ready_for_payment', resourceId: 'off_00009hthhsUZ8W4LxQgkjb', clientId: 'tds_57aa862f8bf7', cardID: 'tcd_00009hthhsUZ8W4LxQgkjb'} })
+
+    const response = await duffel.cards.create({
+      resource_id: 'off_00009hthhsUZ8W4LxQgkjb',
+      card_id: 'tcd_00009hthhsUZ8W4LxQgkjb'
+      services: [{quantity: 1, id: 'ser_00009UhD4ongolulWd9123'}],
+      exception: null,
+    })
+    expect(response.data.id).toBe(MOCK_ID)
+  })
+})
diff --git a/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.ts b/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.ts
new file mode 100644
index 00000000..d3cc5243
--- /dev/null
+++ b/src/Payments/ThreeDSecureSessions/ThreeDSecureSessions.ts
@@ -0,0 +1,66 @@
+import { Client } from '../../Client'
+import { Resource } from '../../Resource'
+import { DuffelResponse } from '../../types'
+
+interface Service {
+  /**
+   * The quantity of the service ID to pay for
+   */
+  quantity: number
+  /**
+   * The ID of the service to pay for
+   */
+  id: string
+}
+
+interface ThreeDSecureSessionParameters {
+  /**
+   * The offer ID, order ID, order change ID or quote ID intended to pay
+   */
+  resource_id: string
+
+  /**
+   * The services inteded to pay
+   */
+  services: Service[]
+
+  /**
+   * The card ID
+   */
+  card_id: string
+
+  /**
+   * The exception name for the 3DS session
+   */
+  exception: string
+}
+
+interface ThreeDSecureSessionRecord {
+  id: string
+  resource_id: string
+  card_id: string
+  live_mode: boolean
+  expires_at: string
+  status: string
+  client_id: string
+}
+
+export class ThreeDSecureSession extends Resource {
+  /**
+   * Endpoint path
+   */
+  path: string
+
+  constructor(args: any) {
+    super(args)
+    this.path = 'payments/three_d_secure_sessions'
+  }
+
+  /**
+   * Create a Duffel ThreeDSecureSession record
+   */
+  public create = async (
+    data: ThreeDSecureSessionParameters,
+  ): Promise<DuffelResponse<ThreeDSecureSessionRecord>> =>
+    this.request({ method: 'POST', path: this.path, data })
+}
diff --git a/src/Payments/ThreeDSecureSessions/index.ts b/src/Payments/ThreeDSecureSessions/index.ts
new file mode 100644
index 00000000..28ba9018
--- /dev/null
+++ b/src/Payments/ThreeDSecureSessions/index.ts
@@ -0,0 +1 @@
+export * from './ThreeDSecureSessions'
diff --git a/src/Payments/index.ts b/src/Payments/index.ts
new file mode 100644
index 00000000..59c836e0
--- /dev/null
+++ b/src/Payments/index.ts
@@ -0,0 +1,2 @@
+export * from './Cards'
+export * from './ThreeDSecureSessions'
diff --git a/src/Vault/index.ts b/src/Vault/index.ts
deleted file mode 100644
index 90016471..00000000
--- a/src/Vault/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from './Cards'
diff --git a/src/index.ts b/src/index.ts
index 85859804..41bbab31 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,7 +19,8 @@ import { Refunds } from './DuffelPayments/Refunds'
 import { Sessions } from './Links'
 import { Webhooks } from './notifications'
 import { Stays } from './Stays/Stays'
-import { Cards } from './Vault/Cards'
+import { Cards } from './Payments/Cards'
+import { ThreeDSecureSessions } from './Payments/ThreeDSecureSessions'
 
 export interface DuffelAPIClient {
   aircraft: Aircraft
@@ -34,6 +35,7 @@ export interface DuffelAPIClient {
   orderCancellations: OrderCancellations
   payments: Payments
   seatMaps: SeatMaps
+  threeDSecureSessions: ThreeDSecureSessions
 }
 
 export class Duffel {
@@ -58,6 +60,7 @@ export class Duffel {
   public refunds: Refunds
   public webhooks: Webhooks
   public stays: Stays
+  public three_d_secure_sessions: ThreeDSecureSessions
 
   private cardsClient: Client
   public cards: Cards
@@ -85,6 +88,7 @@ export class Duffel {
     this.refunds = new Refunds(this.client)
     this.webhooks = new Webhooks(this.client)
     this.stays = new Stays(this.client)
+    this.three_d_secure_sessions = new ThreeDSecureSessions(this.client)
 
     this.cardsClient = new Client({
       ...config,