diff --git a/composer.json b/composer.json
index d8aa0f9..75ffdb8 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
 		}
 	],
 	"require": {
-		"php": ">=5.4",
+		"php": ">=5.6",
 		"psr/http-message": "^1.0",
 		"twister/sql": "*"
 	},