diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6417303..69207a0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -51,6 +51,9 @@ jobs:
         uses: ramsey/composer-install@v3
         with:
           dependency-versions: ${{ matrix.dependencies }}
+      - name: Check PSR-4 mapping
+        if: ${{ matrix.php-versions == 8.3 && matrix.composer == 'v2' }}
+        run: composer dump-autoload --dev --optimize --strict-psr
       - name: Set default branch for tests
         run: git config --global init.defaultBranch main
       - name: Run Tests
@@ -65,10 +68,10 @@ jobs:
           STRYKER_DASHBOARD_API_KEY: ${{ secrets.STRYKER_DASHBOARD_API_KEY }}
         run: |
           composer config --no-plugins allow-plugins.infection/extension-installer true
-          composer req infection/infection -W
+          composer require infection/infection --update-with-all-dependencies
           vendor/bin/infection --ignore-msi-with-no-mutations --min-covered-msi=100 --min-msi=100 -s -j4 --only-covered
       - name: Run phpstan
         if: ${{ matrix.php-versions == 8.3 && matrix.operating-system == 'ubuntu-latest' }}
         run: |
-          composer req phpstan/phpstan
+          composer require phpstan/phpstan --dev
           vendor/bin/phpstan