diff --git a/composer.json b/composer.json
index 873a314..53e2709 100644
--- a/composer.json
+++ b/composer.json
@@ -7,6 +7,7 @@
             "email": "bignet.k@gmail.com"
         }
     ],
+    "license": "MIT",
     "require": {
         "php": "^7.2"
     },