diff --git a/composer.json b/composer.json
index ce99a9b..39965ee 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "fig/link-util": "^1.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^9.5",
+    "phpunit/phpunit": "^10.5",
     "justinrainbow/json-schema": "^5.2",
     "phpspec/prophecy-phpunit": "^2.0"
   }