diff --git a/composer.json b/composer.json
index ca470656..86918472 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "source": "https://github.com/cakephp/cakephp-codesniffer"
     },
     "require": {
-        "php": ">=5.4",
+        "php": ">=5.6",
         "squizlabs/php_codesniffer": "^3.0.0"
     },
     "require-dev": {