diff --git a/composer.json b/composer.json
index 9bf8743..ed04af5 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,7 @@
             "homepage": "https://tentakelfabrik.de"
         }
     ],
+    "minimum-stability": "stable",
     "require": {
         "php": "^7.0",
         "mikecao/flight": "^1.3",