diff --git a/composer.json b/composer.json
index a7b16860..a201a033 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "3.7.*",
-        "phpdocumentor/phpdocumentor":"2.*"
+        "phpdocumentor/phpdocumentor":"2.*",
+        "squizlabs/php_codesniffer": "1.*"
     },
     "suggest": {
         "ext-gd2": "Required to add images",