diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 034394573..2edb6ef60 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -48,7 +48,7 @@ jobs:
         run: uv sync --upgrade
 
       - name: Run tests (excluding integration and client_process)
-        run: uv run pytest --inline-snapshot=disable tests -m "not integration and not client_process" --numprocesses auto --maxprocesses 4 --dist worksteal
+        run: uv run pytest --inline-snapshot=disable tests -m "not integration and not client_process" ${{ matrix.os == 'windows-latest' && '' || '--numprocesses auto --maxprocesses 4 --dist worksteal' }}
 
       - name: Run client process tests separately
         run: uv run pytest --inline-snapshot=disable tests -m "client_process" -x