diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9526859..bf814bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- `OneBlinkUploader.uploadAiEnvironmentStylingAttachment()`
+
 ### Removed
 
 - **[BREAKING]** `OneBlinkUploader.uploadPDFConversion()`
diff --git a/src/OneBlinkUploader.ts b/src/OneBlinkUploader.ts
index 6dfd01a..a8f7ef7 100644
--- a/src/OneBlinkUploader.ts
+++ b/src/OneBlinkUploader.ts
@@ -8,6 +8,7 @@ import {
   UploadEmailAttachmentOptions,
   UploadCustomPDFOptions,
   UploadAiBuilderAttachmentOptions,
+  UploadAiEnvironmentStylingAttachmentOptions,
 } from './types.js'
 import { SubmissionTypes } from '@oneblink/types'
 import generateFormSubmissionTags from './generateFormSubmissionTags.js'
@@ -555,6 +556,47 @@ export default class OneBlinkUploader {
     })
   }
 
+  /**
+   * Upload an attachment for use with the AI environment styling.
+   *
+   * #### Example
+   *
+   * ```ts
+   * const abortController = new AbortController()
+   * const result = await uploader.uploadAiEnvironmentStylingAttachment({
+   *   onProgress: (progress) => {
+   *     // ...
+   *   },
+   *   data: attachmentData,
+   *   formsAppEnvironmentId: 1,
+   *   abortSignal: abortController.signal,
+   * })
+   * ```
+   *
+   * @param data The attachment data and options
+   * @returns The upload result
+   */
+  async uploadAiEnvironmentStylingAttachment({
+    onProgress,
+    abortSignal,
+    data,
+    formsAppEnvironmentId,
+    contentType,
+    fileName,
+  }: UploadAiEnvironmentStylingAttachmentOptions) {
+    return await uploadToS3({
+      ...this,
+      contentType,
+      body: data,
+      key: `forms-app-environments/${formsAppEnvironmentId}/ai-builder/attachments`,
+      requestBodyHeader: {
+        fileName: encodeURIComponent(fileName),
+      },
+      abortSignal,
+      onProgress,
+    })
+  }
+
   /**
    * Upload a PDF for a form to be used as a custom PDF in workflow events.
    * Custom PDFs are always private.
diff --git a/src/types.ts b/src/types.ts
index 0848def..e5d6111 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -90,4 +90,18 @@ export type UploadAiBuilderAttachmentOptions = UploadOptions & {
   fileName: string
 }
 
+export type UploadAiEnvironmentStylingAttachmentOptions = UploadOptions & {
+  /** The file data to upload */
+  data: AttachmentUploadData
+  /** A standard MIME type describing the format of the contents */
+  contentType: string
+  /**
+   * The id of the Forms App Environment that the AI Environment Styling is
+   * being used with
+   */
+  formsAppEnvironmentId: number
+  /** The name of the file being uploaded */
+  fileName: string
+}
+
 export type UploadEmailAttachmentOptions = UploadAssetOptions