diff --git a/packages/artifact/__tests__/upload-artifact.test.ts b/packages/artifact/__tests__/upload-artifact.test.ts
index b9a068f0..f48f290a 100644
--- a/packages/artifact/__tests__/upload-artifact.test.ts
+++ b/packages/artifact/__tests__/upload-artifact.test.ts
@@ -7,6 +7,7 @@ import * as blobUpload from '../src/internal/upload/blob-upload.js'
 import {uploadArtifact} from '../src/internal/upload/upload-artifact.js'
 import {noopLogs} from './common.js'
 import {FilesNotFoundError} from '../src/internal/shared/errors.js'
+import * as stream from '../src/internal/upload/stream.js'
 import {BlockBlobUploadStreamOptions} from '@azure/storage-blob'
 import * as fs from 'fs'
 import * as path from 'path'
diff --git a/packages/artifact/package-lock.json b/packages/artifact/package-lock.json
index 47e6ffb0..37203525 100644
--- a/packages/artifact/package-lock.json
+++ b/packages/artifact/package-lock.json
@@ -1795,6 +1795,7 @@
       "version": "5.9.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
       "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
diff --git a/packages/artifact/src/internal/upload/stream.ts b/packages/artifact/src/internal/upload/stream.ts
index 8894c8b6..8563f0be 100644
--- a/packages/artifact/src/internal/upload/stream.ts
+++ b/packages/artifact/src/internal/upload/stream.ts
@@ -2,7 +2,7 @@ import * as stream from 'stream'
 import * as fs from 'fs'
 import {realpath} from 'fs/promises'
 import * as core from '@actions/core'
-import {getUploadChunkSize} from '../shared/config'
+import {getUploadChunkSize} from '../shared/config.js'
 
 // Custom stream transformer so we can set the highWaterMark property
 // See https://github.com/nodejs/node/issues/8855