diff --git a/composer.json b/composer.json
index 726d09fb..a7ac1443 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
         "silverstripe/login-forms": "6.x-dev"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6"
+        "phpunit/phpunit": "^11.3"
     },
     "extra": {
         "project-files": [