diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3cb6d6a..f03fa25 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,5 +15,6 @@ jobs:
       - uses: php-actions/phpstan@v3
       - uses: php-actions/phpunit@v3
         with:
+          version: 10
           test_suffix: "Test.php"
           php_version: ${{ matrix.php-versions }}