保持

composer.json

@@ -55,6 +55,15 @@
     },
     "config": {
         "preferred-install": "dist",
-        "platform-check": false
+        "platform-check": false,
+        "allow-plugins": {
+            "kylekatarnls/update-helper": true
+        }
+    },
+    "repositories": {
+        "packagist": {
+            "type": "composer",
+            "url": "https://packagist.phpcomposer.com"
+        }
     }
 }