diff --git a/composer.json b/composer.json
index aae41c7..5c17812 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "license": "MIT",
     "homepage": "https://github.com/digicomp/DigiComp.Sequence",
     "require": {
-        "neos/flow": "~4.0|~5.3"
+        "neos/flow": "~4.0|~5.3|~6.3"
     },
     "autoload": {
         "psr-4": {
@@ -65,4 +65,4 @@
             "Neos.Flow-20180415105700"
         ]
     }
-}
\ No newline at end of file
+}