diff --git a/composer.json b/composer.json
index 2c76bc1..12cceab 100644
--- a/composer.json
+++ b/composer.json
@@ -61,10 +61,10 @@
     "phpcompatibility/phpcompatibility-wp": "2.1.0",
     "squizlabs/php_codesniffer": "3.5.4",
     "phpstan/phpstan": "^0.12.64",
+    "phpunit/phpunit": "^8.5",
     "szepeviktor/phpstan-wordpress": "^0.7.1",
     "codeception/module-rest": "^1.2",
     "wp-graphql/wp-graphql-testcase": "~2.1",
-    "phpunit/phpunit": "9.4.1",
     "simpod/php-coveralls-mirror": "^3.0",
     "phpstan/extension-installer": "^1.1"
   }