diff --git a/composer.json b/composer.json
index 28ccd07..8cab489 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     "require": {
         "silverstripe/framework": "^4.10",
         "silverstripe/recipe-plugin": "^1",
-        "phpunit/phpunit": "^9",
+        "phpunit/phpunit": "^9.5",
         "silverstripe/behat-extension": "^4.4",
         "silverstripe/serve": "^2.2",
         "squizlabs/php_codesniffer": "^3"