diff --git a/ruoyi-auth/src/main/java/org/dromara/auth/config/CaptchaConfig.java b/ruoyi-auth/src/main/java/org/dromara/auth/config/CaptchaConfig.java
index e9804a076..4b0788253 100644
--- a/ruoyi-auth/src/main/java/org/dromara/auth/config/CaptchaConfig.java
+++ b/ruoyi-auth/src/main/java/org/dromara/auth/config/CaptchaConfig.java
@@ -20,7 +20,7 @@ public class CaptchaConfig {
 
     private static final int WIDTH = 160;
     private static final int HEIGHT = 60;
-    private static final Color BACKGROUND = Color.LIGHT_GRAY;
+    private static final Color BACKGROUND = Color.WHITE;
     private static final Font FONT = new Font("Arial", Font.BOLD, 48);
 
     /**
diff --git a/script/config/nacos/ruoyi-auth.yml b/script/config/nacos/ruoyi-auth.yml
index 0b8b22815..78b86c02d 100644
--- a/script/config/nacos/ruoyi-auth.yml
+++ b/script/config/nacos/ruoyi-auth.yml
@@ -7,7 +7,7 @@ security:
     # 验证码类型 math 数组计算 char 字符验证
     type: MATH
     # line 线段干扰 circle 圆圈干扰 shear 扭曲干扰
-    category: CIRCLE
+    category: SHEAR
     # 数字验证码位数
     numberLength: 1
     # 字符验证码长度