diff --git a/service/file_sync_service.py b/service/file_sync_service.py
index 805b763..e671df4 100644
--- a/service/file_sync_service.py
+++ b/service/file_sync_service.py
@@ -176,7 +176,7 @@ def dedupe_workflow_ids():
 
 @server.PromptServer.instance.routes.get('/workspace/deduplicate_workflow_ids')
 async def deduplicate_workflow_ids(request):
-    dedupe_workflow_ids()
+    await asyncio.to_thread(dedupe_workflow_ids)
     return web.json_response(text="success", content_type='application/json')
 
 @server.PromptServer.instance.routes.post('/workspace/get_workflow_file')