diff --git a/composer.json b/composer.json
index 4651bb7..e3f142a 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "validation"
     ],
     "require": {
-        "neos/flow": "~4.1|^5.3"
+        "neos/flow": "^6.1.5"
     },
     "autoload": {
         "psr-4": {
@@ -70,4 +70,4 @@
             "Neos.Flow-20180415105700"
         ]
     }
-}
\ No newline at end of file
+}