diff --git a/composer.json b/composer.json
index 8b24871..eb897ec 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     "esoko/soko-web": "0.14.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^9.6",
+    "phpunit/phpunit": "^10.3",
     "phpstan/phpstan": "^1.10"
   },
   "autoload": {