diff --git a/composer.json b/composer.json
index 23617dbf8..8fbb39241 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
 		"ext-mcrypt": "You need to install ext-openssl or ext-mcrypt to use AES-256 encryption"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "^3.7",
+		"phpunit/phpunit": "^9.5",
 		"cakephp/cakephp-codesniffer": "^1.0.0"
 	},
 	"config": {