diff --git a/composer.json b/composer.json
index 319b56c..d0df820 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "validation"
     ],
     "require": {
-        "neos/flow": "~4.1"
+        "neos/flow": "~4.1|^5.3"
     },
     "autoload": {
         "psr-4": {