diff --git a/composer.json b/composer.json
index 20058099..94f1dc8d 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
         "php": ">=7.0.0",
         "ext-simplexml": "*",
         "ext-json": "*",
-        "voku/arrayy": "5.5.*"
+        "voku/arrayy": "5.*"
     },
     "require-dev": {
         "phpunit/phpunit": "~6.0",