diff --git a/.github/actions/run-harnesses/action.yml b/.github/actions/run-harnesses/action.yml
index ff200323..3565cd29 100644
--- a/.github/actions/run-harnesses/action.yml
+++ b/.github/actions/run-harnesses/action.yml
@@ -49,7 +49,7 @@ runs:
     - name: run harnesses
       shell: bash
       if: steps.restore-cache.outputs.cache-hit != 'true'
-      run: make test
+      run: make test -j
 
     - uses: actions/cache/save@v4
       if: steps.restore-cache.outputs.cache-hit != 'true'