diff --git a/packages/backend/server/src/models/copilot-workspace.ts b/packages/backend/server/src/models/copilot-workspace.ts
index 5b1b9d9128..a56dd9d8b3 100644
--- a/packages/backend/server/src/models/copilot-workspace.ts
+++ b/packages/backend/server/src/models/copilot-workspace.ts
@@ -16,6 +16,7 @@ import type {
 
 @Injectable()
 export class CopilotWorkspaceConfigModel extends BaseModel {
+  @Transactional()
   private async listIgnoredDocIds(
     workspaceId: string,
     options?: PaginationInput