diff --git a/composer.json b/composer.json
index 0abd128..8049e4c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     "vlucas/phpdotenv": "^5.6.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^9.6.21",
+    "phpunit/phpunit": "^10.0.0",
     "squizlabs/php_codesniffer": "*"
   },
   "autoload": {