diff --git a/composer.json b/composer.json
index 21e611ccb..f8df18dad 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,6 @@
   "autoload": {"psr-4": {"app\\": "application"}},
   "require": {
     "php": ">=5.6.0",
-    "php-iconv": "*",
     "qiniu/php-sdk": "^7.2",
     "endroid/qr-code": "^1.9",
     "topthink/framework": "^5.1",