diff --git a/composer.json b/composer.json
index 19e2e70..45b69e0 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
     }
   },
   "require": {
-    "php": "7.1-7.2",
+    "php": "7.1 - 7.2",
     "ext-ionCube-Loader": "*",
     "d3/heidelpay": "~6.0.1"
   },