diff --git a/composer.json b/composer.json
index 00d5d62..8346a48 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
 		}
 	],
 	"require": {
-		"php": ">=5.4.0",
+		"php": ">=5.5.0",
 		"illuminate/support": "~4.0|~5.0",
 		"mockery/mockery": "^0.9.9"
 	},