diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 1977315fb..f39a8e50e 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -44,7 +44,7 @@ jobs:
       - name: Setup MSVC env on Windows
         if: startsWith(matrix.os, 'windows')
         env:
-          MSVC_BIN: 'C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.41.34120\bin\HostX64\x64'        
+          MSVC_BIN: 'C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.41.34120\bin\HostX64\x64'
         shell: bash
         run: |
           echo "CC=${MSVC_BIN}\cl.exe" >> $GITHUB_ENV
@@ -58,12 +58,15 @@ jobs:
         if: github.event_name != 'workflow_dispatch'
         env:
           TOX_SKIP_ENV: '.*?(py311).*?'
+          TOX_PARALLEL_NO_SPINNER: 1
         shell: bash -l {0}
-        run: python -m tox
+        run: python -m tox --parallel
       - name: Run tests, workflow dispatch so test all Python versions
         if: github.event_name == 'workflow_dispatch'
+        env:
+          TOX_PARALLEL_NO_SPINNER: 1
         shell: bash -l {0}
-        run: python -m tox
+        run: python -m tox --parallel
       - name: Upload test results
         if: always()
         uses: actions/upload-artifact@v4