diff --git a/packages/backend-core/src/objectStore/objectStore.ts b/packages/backend-core/src/objectStore/objectStore.ts
index 0ac2c35179..35748d8f76 100644
--- a/packages/backend-core/src/objectStore/objectStore.ts
+++ b/packages/backend-core/src/objectStore/objectStore.ts
@@ -41,10 +41,7 @@ type UploadParams = BaseUploadParams & {
   path?: string | PathLike
 }
 
-export type StreamTypes =
-  | ReadStream
-  | NodeJS.ReadableStream
-  | ReadableStream<Uint8Array>
+export type StreamTypes = ReadStream | NodeJS.ReadableStream
 
 export type StreamUploadParams = BaseUploadParams & {
   stream?: StreamTypes
@@ -222,6 +219,9 @@ export async function streamUpload({
   extra,
   ttl,
 }: StreamUploadParams) {
+  if (!stream) {
+    throw new Error("Stream to upload is invalid/undefined")
+  }
   const extension = filename.split(".").pop()
   const objectStore = ObjectStore(bucketName)
   const bucketCreated = await createBucketIfNotExists(objectStore, bucketName)
@@ -251,14 +251,35 @@ export async function streamUpload({
       : CONTENT_TYPE_MAP.txt
   }
 
+  const bucket = sanitizeBucket(bucketName),
+    objKey = sanitizeKey(filename)
   const params = {
-    Bucket: sanitizeBucket(bucketName),
-    Key: sanitizeKey(filename),
+    Bucket: bucket,
+    Key: objKey,
     Body: stream,
     ContentType: contentType,
     ...extra,
   }
-  return objectStore.upload(params).promise()
+
+  // make sure we have the stream before we try to push it to object store
+  if (stream.on) {
+    await new Promise((resolve, reject) => {
+      stream.on("finish", resolve)
+      stream.on("error", reject)
+    })
+  }
+
+  const details = await objectStore.upload(params).promise()
+  const headDetails = await objectStore
+    .headObject({
+      Bucket: bucket,
+      Key: objKey,
+    })
+    .promise()
+  return {
+    ...details,
+    ContentLength: headDetails.ContentLength,
+  }
 }
 
 /**
diff --git a/packages/types/src/documents/app/automation.ts b/packages/types/src/documents/app/automation.ts
index 6d1753dc28..63291fa3bb 100644
--- a/packages/types/src/documents/app/automation.ts
+++ b/packages/types/src/documents/app/automation.ts
@@ -245,7 +245,7 @@ export type AutomationAttachment = {
 
 export type AutomationAttachmentContent = {
   filename: string
-  content: ReadStream | NodeJS.ReadableStream | ReadableStream<Uint8Array>
+  content: ReadStream | NodeJS.ReadableStream
 }
 
 export type BucketedContent = AutomationAttachmentContent & {