diff --git a/composer.json b/composer.json
index 262c8c1..581dbaf 100644
--- a/composer.json
+++ b/composer.json
@@ -9,6 +9,7 @@
         }
     ],
     "minimum-stability": "dev",
+    "prefer-stable": true,
     "bin": [
         "bin/heif-converter-linux",
         "bin/heif-converter-windows",