diff --git a/composer.json b/composer.json
index d4f3b70..ff89f70 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,7 @@
 		}
 	],
 	"require": {
+		"php": "^5.6 || ^7.0",
 		"nette/di": "^2.4@dev",
 		"tracy/tracy": "^2.4@dev",
 		"monolog/monolog": "^1.10"