diff --git a/composer.json b/composer.json
index 20e1608..b7a65bb 100644
--- a/composer.json
+++ b/composer.json
@@ -27,12 +27,7 @@
 	},
 	"require-dev": {
 		"phpunit/phpunit": "^5.7",
-		"squizlabs/php_codesniffer": "^3.0",
-		"phpmd/phpmd": "^2.6",
-		"sebastian/phpcpd": "^3.0",
-		"phploc/phploc": "^4.0",
-		"pdepend/pdepend": "^2.5",
-		"theseer/phpdox": "^0.11.0"
+		"squizlabs/php_codesniffer": "^3.0"
 	},
 	"autoload": {
 		"psr-4": {