diff --git a/composer.json b/composer.json
index 3162c7b..7ab47c0 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
           "ray/aop": "^2.10.4"
      },
      "require-dev": {
-          "phpunit/phpunit": "^9.5",
+          "phpunit/phpunit": "^9.6.19",
           "bamarni/composer-bin-plugin": "^1.4"
      },
      "scripts" :{