diff --git a/.github/workflows/unittest-mpich.yml b/.github/workflows/unittest-mpich.yml
index 5268df86..2a5b988b 100644
--- a/.github/workflows/unittest-mpich.yml
+++ b/.github/workflows/unittest-mpich.yml
@@ -57,4 +57,4 @@ jobs:
     - name: Test
       shell: bash -l {0}
       timeout-minutes: 5
-      run: for f in $(ls tests/test_*.py); do echo $f; python -m unittest $f; done
+      run: cd tests; python -m unittest discover .
diff --git a/.github/workflows/unittest-openmpi.yml b/.github/workflows/unittest-openmpi.yml
index 616e4d74..3d81e857 100644
--- a/.github/workflows/unittest-openmpi.yml
+++ b/.github/workflows/unittest-openmpi.yml
@@ -57,7 +57,7 @@ jobs:
     - name: Test
       shell: bash -l {0}
       timeout-minutes: 5
-      run: for f in $(ls tests/test_*.py); do echo $f; python -m unittest $f; done
+      run: cd tests; python -m unittest discover .
       env:
         OMPI_MCA_plm: 'isolated'
         OMPI_MCA_rmaps_base_oversubscribe: 'yes'
diff --git a/.github/workflows/unittest-win.yml b/.github/workflows/unittest-win.yml
index 6d196e9c..809d4f53 100644
--- a/.github/workflows/unittest-win.yml
+++ b/.github/workflows/unittest-win.yml
@@ -34,4 +34,4 @@ jobs:
     - name: Test
       shell: bash -l {0}
       timeout-minutes: 5
-      run: for f in $(ls tests/test_*.py); do echo $f; python -m unittest $f; done
+      run: cd tests; python -m unittest discover .