diff --git a/.github/workflows/deliver.yml b/.github/workflows/deliver.yml
index 603fcbedb..49820e662 100644
--- a/.github/workflows/deliver.yml
+++ b/.github/workflows/deliver.yml
@@ -72,13 +72,13 @@ jobs:
       - name: Load farmos/farmos:3.x-dev image
         run: docker load < /tmp/farmos-dev.tar
       - name: Run PHP CodeSniffer
-        run: docker run farmos/farmos:3.x-dev phpcs /opt/drupal/web/profiles/farm
+        run: docker run farmos/farmos:3.x-dev phpcs --parallel=$(nproc) /opt/drupal/web/profiles/farm
       - name: Run PHPStan
         run: docker run farmos/farmos:3.x-dev phpstan analyze --memory-limit 1G /opt/drupal/web/profiles/farm
       - name: Check PHP compatibility of contrib modules and themes (ignore warnings).
         run: |
-          docker run farmos/farmos:3.x-dev phpcs --standard=PHPCompatibility --runtime-set testVersion 8.2- --warning-severity=0 /opt/drupal/web/modules
-          docker run farmos/farmos:3.x-dev phpcs --standard=PHPCompatibility --runtime-set testVersion 8.2- --warning-severity=0 /opt/drupal/web/themes
+          docker run farmos/farmos:3.x-dev phpcs --parallel=$(nproc) --standard=PHPCompatibility --runtime-set testVersion 8.2- --warning-severity=0 /opt/drupal/web/modules
+          docker run farmos/farmos:3.x-dev phpcs --parallel=$(nproc) --standard=PHPCompatibility --runtime-set testVersion 8.2- --warning-severity=0 /opt/drupal/web/themes
   test:
     name: Run PHPUnit tests
     runs-on: ubuntu-latest