diff --git a/composer.json b/composer.json
index 1790a8e..0552a23 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     "symfony/process": "v7.0.4"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.5|^9.6",
+    "phpunit/phpunit": "11.3.6",
     "spatie/ray": "dev-main"
   },
   "bin": [