diff --git a/composer.json b/composer.json
index 50dbb1bf..c673d65e 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     "psr/http-client": "^1.0.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.5.27",
+    "phpunit/phpunit": "^10.5.35",
     "squizlabs/php_codesniffer": "~3.7",
     "guzzlehttp/guzzle": "^7.0.1",
     "guzzlehttp/psr7": "^2.0.0"