diff --git a/composer.json b/composer.json
index 79c92b52..e67550c3 100644
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,9 @@
     "require": {
         "php": ">=5.0.0"
     },
+    "require-dev": {
+        "squizlabs/php_codesniffer": "1.*"
+    },
     "suggest": {
         "ext-mcrypt": "Install the Mcrypt extension in order to speed up a wide variety of cryptographic operations.",
         "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",