diff --git a/composer.json b/composer.json
index 76899f2..9f0fdfd 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "mcnd/lean": "1.4.2"
+        "mcnd/lean": "^1.4.2"
     },
     "autoload": {
         "psr-4": {