diff --git a/composer.json b/composer.json
index 1affa36..2ca4933 100644
--- a/composer.json
+++ b/composer.json
@@ -39,8 +39,9 @@
     "robmorgan/phinx": "^0.15",
     "nelexa/zip": "^4.0.0",
     "voku/anti-xss": "^4.1",
-    "topthink/think-validate": "^3.0"
-  },
+    "topthink/think-validate": "^3.0",
+		"ext-bcmath": "*"
+	},
   "suggest": {
     "ext-event": "For better performance. "
   },
diff --git a/config/buildadmin.php b/config/buildadmin.php
index 5253a9e..2e68852 100644
--- a/config/buildadmin.php
+++ b/config/buildadmin.php
@@ -7,9 +7,9 @@ return [
     // 允许跨域访问的域名（* 表示任意；开发可用 *，生产建议填具体域名）
     'cors_request_domain'   => '*',
     // 是否开启会员登录验证码
-    'user_login_captcha'    => true,
+    'user_login_captcha'    => false,
     // 是否开启管理员登录验证码
-    'admin_login_captcha'   => true,
+    'admin_login_captcha'   => false,
     // 会员登录失败可重试次数,false则无限
     'user_login_retry'      => 10,
     // 管理员登录失败可重试次数,false则无限