diff --git a/models/rank/logistic_regression/config.yaml b/models/rank/logistic_regression/config.yaml
index 2d8bc786cd3966e8c1fb4f53e997cec12f0da890..aa32a9cdd4137dd0d4abb29088635d8b9bc331e5 100644
--- a/models/rank/logistic_regression/config.yaml
+++ b/models/rank/logistic_regression/config.yaml
@@ -66,8 +66,8 @@ phase:
 - name: phase1
   model: "{workspace}/model.py"
   dataset_name: train_sample
-  thread_num: 10
+  thread_num: 1
 - name: infer_phase
   model: "{workspace}/model.py"
   dataset_name: infer_sample
-  thread_num: 10
+  thread_num: 1