diff --git a/composer.json b/composer.json
index 0e06e7e1..64f9c36c 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,11 @@
 
     "require-dev": {
         "phpunit/phpunit": "~4.0",
-        "phpspec/prophecy-phpunit": "~1.0"
+        "phpspec/prophecy-phpunit": "~1.0",
+        "phpmd/phpmd": "~2.0",
+        "squizlabs/php_codesniffer": "~1.5",
+        "block8/php-docblock-checker": "~1.0",
+        "phploc/phploc": "~2.0"
     },
 
     "suggest": {