diff --git a/test/helpers/sdk/index.ts b/test/helpers/sdk/index.ts
index 0d4bf4e68..37358fc8f 100644
--- a/test/helpers/sdk/index.ts
+++ b/test/helpers/sdk/index.ts
@@ -1,6 +1,6 @@
 import type { PaginatedDocs } from 'payload/database'
 
-import type { CreateArgs, FetchOptions, FindArgs, GeneratedTypes } from './types.js'
+import type { CreateArgs, FetchOptions, FindArgs, GeneratedTypes, UpdateArgs } from './types.js'
 
 type Args = {
   serverURL: string
@@ -53,6 +53,17 @@ export class PayloadTestSDK<TGeneratedTypes extends GeneratedTypes<TGeneratedTyp
 
   serverURL: string
 
+  update = async <T extends keyof TGeneratedTypes['collections']>({
+    jwt,
+    ...args
+  }: UpdateArgs<TGeneratedTypes, T>) => {
+    return this.fetch<TGeneratedTypes['collections'][T]>({
+      method: 'update',
+      args,
+      jwt,
+    })
+  }
+
   constructor({ serverURL }: Args) {
     this.serverURL = serverURL
   }
diff --git a/test/helpers/sdk/types.ts b/test/helpers/sdk/types.ts
index b7e62090f..ea2667551 100644
--- a/test/helpers/sdk/types.ts
+++ b/test/helpers/sdk/types.ts
@@ -1,5 +1,5 @@
-import type { TypeWithID, Where } from 'payload/types'
-import type { MarkOptional } from 'ts-essentials'
+import type { TypeWithID, Where, WhereField } from 'payload/types'
+import type { DeepPartial, MarkOptional } from 'ts-essentials'
 
 type CollectionDoc = {
   createdAt?: string
@@ -25,7 +25,7 @@ export type GeneratedTypes<T extends BaseTypes> = {
 export type FetchOptions = {
   args?: Record<string, unknown>
   jwt?: string
-  method: 'create' | 'find'
+  method: 'create' | 'find' | 'update'
   reduceJSON?: <R>(json: any) => R
 }
 
@@ -54,6 +54,46 @@ export type CreateArgs<
   user?: TypeWithID
 } & BaseArgs
 
+export type UpdateByIDArgs<
+  TGeneratedTypes extends GeneratedTypes<TGeneratedTypes>,
+  TSlug extends keyof TGeneratedTypes['collections'],
+> = UpdateBaseArgs<TGeneratedTypes, TSlug> & {
+  id: number | string
+  where?: never
+}
+
+export type UpdateManyArgs<
+  TGeneratedTypes extends GeneratedTypes<TGeneratedTypes>,
+  TSlug extends keyof TGeneratedTypes['collections'],
+> = UpdateBaseArgs<TGeneratedTypes, TSlug> & {
+  id: never
+  where?: WhereField
+}
+
+export type UpdateBaseArgs<
+  TGeneratedTypes extends GeneratedTypes<TGeneratedTypes>,
+  TSlug extends keyof TGeneratedTypes['collections'],
+> = {
+  autosave?: boolean
+  collection: TSlug
+  data: DeepPartial<TGeneratedTypes['collections'][TSlug]>
+  depth?: number
+  draft?: boolean
+  fallbackLocale?: string
+  file?: File
+  filePath?: string
+  locale?: string
+  overrideAccess?: boolean
+  overwriteExistingFiles?: boolean
+  showHiddenFields?: boolean
+  user?: TypeWithID
+} & BaseArgs
+
+export type UpdateArgs<
+  TGeneratedTypes extends GeneratedTypes<TGeneratedTypes>,
+  TSlug extends keyof TGeneratedTypes['collections'],
+> = UpdateByIDArgs<TGeneratedTypes, TSlug> | UpdateManyArgs<TGeneratedTypes, TSlug>
+
 export type FindArgs<
   TGeneratedTypes extends GeneratedTypes<TGeneratedTypes>,
   TSlug extends keyof TGeneratedTypes['collections'],
diff --git a/test/localization/e2e.spec.ts b/test/localization/e2e.spec.ts
index 3c3ced3dd..8305d564d 100644
--- a/test/localization/e2e.spec.ts
+++ b/test/localization/e2e.spec.ts
@@ -1,12 +1,12 @@
 import type { Page } from '@playwright/test'
-import type { Payload } from 'payload'
 
 import { expect, test } from '@playwright/test'
 import path from 'path'
 import { wait } from 'payload/utilities'
 import { fileURLToPath } from 'url'
 
-import type { LocalizedPost } from './payload-types.js'
+import type { PayloadTestSDK } from '../helpers/sdk/index.js'
+import type { Config, LocalizedPost } from './payload-types.js'
 
 import {
   changeLocale,
@@ -46,7 +46,7 @@ const arabicTitle = 'arabic title'
 const description = 'description'
 
 let page: Page
-let payload: Payload
+let payload: PayloadTestSDK<Config>
 let serverURL: string
 
 describe('Localization', () => {