diff --git a/composer.json b/composer.json
index 3381574..b497eb8 100644
--- a/composer.json
+++ b/composer.json
@@ -4,9 +4,9 @@
     "name": "flownative/neos-pixxio",
     "license": "MIT",
     "require": {
-        "neos/flow": "6.* || 7.* || dev-master",
-        "neos/media": "5.* || 6.* || 7.* || dev-master",
-        "guzzlehttp/guzzle": "6.*",
+        "neos/flow": "^6.3 || ^7.0 || ^8.0 || dev-master",
+        "neos/media": "^5.3 || ^7.0 || ^8.0 || dev-master",
+        "guzzlehttp/guzzle": "^6.0 || ^7.0",
         "behat/transliterator": "~1.0"
     },
     "autoload": {