diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d5e36182..e9082b03 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -36,7 +36,7 @@ jobs:
         echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
     - name: Install PHP dependencies
-      run: composer update --${{ matrix.dependency-version }} --no-interaction --no-progress --ansi
+      run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --no-progress --ansi --optimize-autoloader
 
     - name: Install dependencies
       run: npm ci