diff --git a/os-admin/src/main/resources/application.yml b/os-admin/src/main/resources/application.yml
index ea166d8..fc86938 100644
--- a/os-admin/src/main/resources/application.yml
+++ b/os-admin/src/main/resources/application.yml
@@ -13,7 +13,7 @@ ruoyi:
   # 获取ip地址开关
   addressEnabled: false
   # 验证码类型 math 数字计算 char 字符验证
-  captchaType: char
+  captchaType: math
 
 # 开发环境配置
 server:
@@ -197,4 +197,4 @@ minio:
   url: http://localhost:9000
   accessKey: minioadmin
   secretKey: minioadmin
-  bucketName: test
\ No newline at end of file
+  bucketName: test