diff --git a/composer.json b/composer.json
index 9ad1948..1fa6f6f 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
 	"require": {
 		"johnbillion/query-monitor": "^3.13.1",
 		"altis/dev-tools-command": "^0.7.2",
-		"wp-phpunit/wp-phpunit": "6.2.2",
+		"wp-phpunit/wp-phpunit": "6.0.5",
 		"yoast/phpunit-polyfills": "^1.0.5",
 		"phpunit/phpunit": "^9.6.10",
 		"lucatume/wp-browser": "~3.1.10",