diff --git a/composer.json b/composer.json
index 3afebee..47ce79e 100644
--- a/composer.json
+++ b/composer.json
@@ -3,6 +3,7 @@
     "description": "Creating Console Application library on top of Symfony Console",
     "type": "library",
     "require": {
+        "php": "^7.1",
         "symfony/console": "^3.2",
         "psr/container": "^1.0"
     },