diff --git a/composer.json b/composer.json
index 8adc462..b0472f4 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "php-di/php-di": "dev-master",
         "ext-json": "*",
         "ext-pdo": "*",
-        "mcnd/lean": "dev-master"
+        "mcnd/lean": "1.4.2"
     },
     "repositories": [
         {