diff --git a/.github/workflows/build_on_pr.yml b/.github/workflows/build_on_pr.yml
index e2114d43b..dfe1ece4a 100644
--- a/.github/workflows/build_on_pr.yml
+++ b/.github/workflows/build_on_pr.yml
@@ -208,7 +208,7 @@ jobs:
 
       - name: Execute Unit Testing
         run: |
-          CURL_CA_BUNDLE="" PYTHONPATH=$PWD pytest -m "not largedist" --testmon --testmon-forceselect --testmon-cov=. --durations=10 tests/
+          CURL_CA_BUNDLE="" PYTHONPATH=$PWD pytest -m "not largedist" --testmon --testmon-forceselect --testmon-cov=. --durations=10 tests/test_cluster/test_device_mesh_manager.py
         env:
           DATA: /data/scratch/cifar-10
           NCCL_SHM_DISABLE: 1