diff --git a/backend/src/workspace-maintenance.ts b/backend/src/workspace-maintenance.ts
index 0ec8bbce..81d6e01a 100644
--- a/backend/src/workspace-maintenance.ts
+++ b/backend/src/workspace-maintenance.ts
@@ -249,6 +249,7 @@ function createProductionService(): WorkspacePreprocessingService {
         configPath: process.env.THT_CONFIG ?? "config/tht.yaml",
         dataRoot: config.dataRoot ?? "/data",
         secretRoots: config.workspaceRegistry.secretRoots,
+        workspaceSecretStore,
         semanticRuntime: {
           internalQdrantUrl: config.internalQdrantUrl,
           internalEmbeddingUrl: config.internalEmbeddingUrl,