diff --git a/composer.json b/composer.json
index 6f56db8..ce222ae 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,7 @@
         "ext-ds": "*",
         "ergebnis/composer-normalize": "^2.42",
         "phpstan/phpstan": "^1.10",
-        "phpunit/phpunit": "^9.6.10 || ^10.5",
+        "phpunit/phpunit": "^9.6.17",
         "roave/security-advisories": "dev-master",
         "squizlabs/php_codesniffer": "^3.9.0",
         "symfony/serializer": "^5.4"