diff --git a/app/Http/Controllers/Api/Remote/Backups/BackupStatusController.php b/app/Http/Controllers/Api/Remote/Backups/BackupStatusController.php
index 7b96f1ba7..93ebc74a8 100644
--- a/app/Http/Controllers/Api/Remote/Backups/BackupStatusController.php
+++ b/app/Http/Controllers/Api/Remote/Backups/BackupStatusController.php
@@ -66,7 +66,7 @@ class BackupStatusController extends Controller
             // being completed in S3 correctly.
             $adapter = $this->backupManager->adapter();
             if ($adapter instanceof AwsS3Adapter) {
-                $this->completeMultipartUpload($model, $adapter, $successful);
+                $this->completeMultipartUpload($model, $adapter, $successful, $request->input('parts'));
             }
         });
 
@@ -85,7 +85,7 @@ class BackupStatusController extends Controller
      *
      * @throws \Throwable
      */
-    public function restore(Request $request, string $backup)
+    public function restore(Request $request, string $backup): JsonResponse
     {
         /** @var \Pterodactyl\Models\Backup $model */
         $model = Backup::query()->where('uuid', $backup)->firstOrFail();
@@ -101,23 +101,24 @@ class BackupStatusController extends Controller
     }
 
     /**
-     * Marks a multipart upload in a given S3-compatiable instance as failed or successful for
+     * Marks a multipart upload in a given S3-compatible instance as failed or successful for
      * the given backup.
      *
      * @throws \Exception
      * @throws \Pterodactyl\Exceptions\DisplayException
      */
-    protected function completeMultipartUpload(Backup $backup, AwsS3Adapter $adapter, bool $successful)
+    protected function completeMultipartUpload(Backup $backup, AwsS3Adapter $adapter, bool $successful, ?array $parts): void
     {
         // This should never really happen, but if it does don't let us fall victim to Amazon's
         // wildly fun error messaging. Just stop the process right here.
         if (empty($backup->upload_id)) {
-            // A failed backup doesn't need to error here, this can happen if the backup encouters
+            // A failed backup doesn't need to error here, this can happen if the backup encounters
             // an error before we even start the upload. AWS gives you tooling to clear these failed
             // multipart uploads as needed too.
             if (!$successful) {
                 return;
             }
+
             throw new DisplayException('Cannot complete backup request: no upload_id present on model.');
         }
 
@@ -136,9 +137,20 @@ class BackupStatusController extends Controller
 
         // Otherwise send a CompleteMultipartUpload request.
         $params['MultipartUpload'] = [
-            'Parts' => $client->execute($client->getCommand('ListParts', $params))['Parts'],
+            'Parts' => [],
         ];
 
+        if (is_null($parts)) {
+            $params['MultipartUpload']['Parts'] = $client->execute($client->getCommand('ListParts', $params))['Parts'];
+        } else {
+            foreach ($parts as $part) {
+                $params['MultipartUpload']['Parts'][] = [
+                    'ETag' => $part['etag'],
+                    'PartNumber' => $part['part_number'],
+                ];
+            }
+        }
+
         $client->execute($client->getCommand('CompleteMultipartUpload', $params));
     }
 }
diff --git a/app/Http/Requests/Api/Remote/ReportBackupCompleteRequest.php b/app/Http/Requests/Api/Remote/ReportBackupCompleteRequest.php
index 0c96b3f02..dcf7435c7 100644
--- a/app/Http/Requests/Api/Remote/ReportBackupCompleteRequest.php
+++ b/app/Http/Requests/Api/Remote/ReportBackupCompleteRequest.php
@@ -16,6 +16,9 @@ class ReportBackupCompleteRequest extends FormRequest
             'checksum' => 'nullable|string|required_if:successful,true',
             'checksum_type' => 'nullable|string|required_if:successful,true',
             'size' => 'nullable|numeric|required_if:successful,true',
+            'parts' => 'nullable|array',
+            'parts.*.etag' => 'required|string',
+            'parts.*.part_number' => 'required|numeric',
         ];
     }
 }