diff --git a/composer.json b/composer.json
index 7cc77704..385903aa 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         }
     ],
     "require": {
-        "php": "^7.0",
+        "php": "^7.1.3",
         "ext-xml": "*",
         "alt-three/badger": "^5.0",
         "alt-three/bus": "^4.0",