diff --git a/uSync.Backoffice.Management.Api/Controllers/Actions/uSyncPerformActionController.cs b/uSync.Backoffice.Management.Api/Controllers/Actions/uSyncPerformActionController.cs
index 6e05a054..7c4e7cc2 100644
--- a/uSync.Backoffice.Management.Api/Controllers/Actions/uSyncPerformActionController.cs
+++ b/uSync.Backoffice.Management.Api/Controllers/Actions/uSyncPerformActionController.cs
@@ -81,7 +81,7 @@ public async Task<IActionResult> ProcessUpload(Guid tempKey)
 
         using (var stream = tempFile.OpenReadStream())
         {
-            return Ok(_managementService.UnpackStream(stream));
+            return Ok(await _managementService.UnpackStreamAsync(stream));
         }
     }
 }
diff --git a/uSync.Backoffice.Management.Api/Services/ISyncManagementService.cs b/uSync.Backoffice.Management.Api/Services/ISyncManagementService.cs
index 09e39586..bb658cda 100644
--- a/uSync.Backoffice.Management.Api/Services/ISyncManagementService.cs
+++ b/uSync.Backoffice.Management.Api/Services/ISyncManagementService.cs
@@ -22,5 +22,9 @@ public interface ISyncManagementService
     Func<SyncActionOptions, uSyncCallbacks, Task<SyncActionResult>> GetHandlerMethodAsync(HandlerActions action);
     Task<SyncFileVersionCheckResult> GetSyncFileInfo();
     Task<PerformActionResponse> PerformActionAsync(PerformActionRequest actionRequest, IUser? user);
-    UploadImportResult UnpackStream(Stream stream);
+
+    [Obsolete("use UnpackStreamAsync will be removed in v19")]
+    UploadImportResult UnpackStream(Stream stream)
+        => UnpackStreamAsync(stream).Result;
+    Task<UploadImportResult> UnpackStreamAsync(Stream stream);
 }
\ No newline at end of file
diff --git a/uSync.Backoffice.Management.Api/Services/uSyncManagementService.cs b/uSync.Backoffice.Management.Api/Services/uSyncManagementService.cs
index deaf689a..21e99b19 100644
--- a/uSync.Backoffice.Management.Api/Services/uSyncManagementService.cs
+++ b/uSync.Backoffice.Management.Api/Services/uSyncManagementService.cs
@@ -427,8 +427,8 @@ public Stream CompressExportFolder()
     /// <summary>
     ///  take a zip file as a stream expand it over the current uSync folder. 
     /// </summary>
-    public UploadImportResult UnpackStream(Stream stream)
-        => _syncActionService.UnpackImportFromStream(stream);
+    public async Task<UploadImportResult> UnpackStreamAsync(Stream stream)
+        => await _syncActionService.UnpackImportFromStreamAsync(stream);
 
     public async Task<SyncFileVersionCheckResult> GetSyncFileInfo()
         => await _syncVersionFileService.GetSyncFileInfo(_configService.GetWorkingFolder());