diff --git a/composer.json b/composer.json
index 0dcea46a21c1f528333c818b6d25d793f5efcefb..785d988895b8aa96516b11116071f0809ff4ac65 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,10 @@
 		}
 	],
 
+	"require": {
+		"php": ">=7.1.0"
+	},
+
 	"require-dev": {
 		"nette/tester": "~1.7.1"
 	},