diff --git a/composer.json b/composer.json
index 96538b3..2bd5285 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
 	},
 	"minimum-stability": "dev",
 	"require": {
-		"php": ">=5.3.6",
+		"php": ">=5.4",
 		"pattern-lab/core": "dev-dev",
 		"pattern-lab/patternengine-twig": "dev-dev",
 		"pattern-lab/styleguidekit-twig-default": "dev-dev"