diff --git a/composer.json b/composer.json
index bf3efb6e..cdd9f476 100644
--- a/composer.json
+++ b/composer.json
@@ -94,7 +94,7 @@
         "doctrine/persistence": "^3.1",
         "ekino/phpstan-banned-code": "^1.0",
         "infection/infection": "^0.29",
-        "matthiasnoback/symfony-dependency-injection-test": "^5.1",
+        "matthiasnoback/symfony-dependency-injection-test": "^5.1 || ^6.0",
         "php-parallel-lint/php-parallel-lint": "^1.3",
         "phpstan/extension-installer": "^1.3",
         "phpstan/phpstan": "^1.8",