diff --git a/composer.json b/composer.json
index f25f60d..5e593e0 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "require": {
         "erusev/parsedown": "^1.6.0",
         "illuminate/support": "^5.2.0",
-        "symfony/flex": "^1.0",
+        "symfony/flex": "^2.5",
         "symfony/lock": "^4.1"
     }
 }