diff --git a/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/DqtReporting/DqtReportingService.cs b/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/DqtReporting/DqtReportingService.cs
index 25d07ac55..98ec31e32 100644
--- a/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/DqtReporting/DqtReportingService.cs
+++ b/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/DqtReporting/DqtReportingService.cs
@@ -146,6 +146,10 @@ await Parallel.ForEachAsync(
                 {
                     await ProcessChangesForEntityType(entityType, ct);
                 }
+                catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
+                {
+                    throw;
+                }
                 catch (Exception ex)
                 {
                     throw new ProcessChangesException(entityType, ex);
diff --git a/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/TrsDataSync/TrsDataSyncService.cs b/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/TrsDataSync/TrsDataSyncService.cs
index 6fab1c17b..25e211aca 100644
--- a/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/TrsDataSync/TrsDataSyncService.cs
+++ b/TeachingRecordSystem/src/TeachingRecordSystem.Core/Services/TrsDataSync/TrsDataSyncService.cs
@@ -62,6 +62,10 @@ async Task SyncIfEnabled(string modelType)
                 {
                     await ProcessChangesForModelType(modelType, cancellationToken);
                 }
+                catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
+                {
+                    throw;
+                }
                 catch (Exception ex)
                 {
                     throw new ProcessChangesException(modelType, ex);