diff --git a/php-packages/testing/composer.json b/php-packages/testing/composer.json
index c9d5c7650..05b6da07c 100644
--- a/php-packages/testing/composer.json
+++ b/php-packages/testing/composer.json
@@ -6,7 +6,7 @@
     "license": "MIT",
     "require": {
         "mockery/mockery": "^1.0",
-        "phpunit/phpunit": "^7.0"
+        "phpunit/phpunit": "^9.0"
     },
     "require-dev": {
         "flarum/core": "^0.1.0-beta"