diff --git a/composer.json b/composer.json
index 2ab8867..c7390c5 100644
--- a/composer.json
+++ b/composer.json
@@ -20,8 +20,8 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.14",
-        "phpunit/phpunit": "^10.0",
-        "spatie/phpunit-snapshot-assertions": "^5.0",
+        "phpunit/phpunit": "^9.6 || ^10.0",
+        "spatie/phpunit-snapshot-assertions": "^4.2 || ^5.0",
         "vimeo/psalm": "^5.6"
     },
     "autoload": {