diff --git a/composer.json b/composer.json
index 2921fa6c..555ba68c 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
         "php-mock/php-mock-phpunit": "~1.0|~2.0",
         "phpstan/phpstan-phpunit": "^2.0",
         "phpunit/phpunit": "~11.0",
-        "symfony/class-loader": "^2.0",
+        "symfony/class-loader": "^3.4",
         "symfony/console": "~7.0|~8.0",
         "symfony/phpunit-bridge": "~7.0|~8.0",
         "symfony/templating": "~6.0|~7.0|~8.0",