diff --git a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/CaptchaVO.java b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/CaptchaVO.java
index 36bedeb4..33bb3dac 100644
--- a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/CaptchaVO.java
+++ b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/CaptchaVO.java
@@ -39,7 +39,7 @@ public class CaptchaVO implements Serializable {
     /**
      * 验证码标识
      */
-    @Schema(description = "验证码标识", example = "8a5a0296acd141a8b1bd789da867bc1a")
+    @Schema(description = "验证码标识", example = "090b9a2c-1691-4fca-99db-e4ed0cff362f")
     private String uuid;
 
     /**
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/auth/model/request/LoginRequest.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/auth/model/request/LoginRequest.java
index 6ac205f9..29180348 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/auth/model/request/LoginRequest.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/auth/model/request/LoginRequest.java
@@ -61,7 +61,7 @@ public class LoginRequest implements Serializable {
     /**
      * 验证码标识
      */
-    @Schema(description = "验证码标识", example = "8a5a0296acd141a8b1bd789da867bc1a")
+    @Schema(description = "验证码标识", example = "090b9a2c-1691-4fca-99db-e4ed0cff362f")
     @NotBlank(message = "验证码标识不能为空")
     private String uuid;
 }
diff --git a/continew-admin-webapi/src/main/java/top/charles7c/cnadmin/webapi/controller/common/CaptchaController.java b/continew-admin-webapi/src/main/java/top/charles7c/cnadmin/webapi/controller/common/CaptchaController.java
index 00915893..04917495 100644
--- a/continew-admin-webapi/src/main/java/top/charles7c/cnadmin/webapi/controller/common/CaptchaController.java
+++ b/continew-admin-webapi/src/main/java/top/charles7c/cnadmin/webapi/controller/common/CaptchaController.java
@@ -75,7 +75,7 @@ public class CaptchaController {
         Captcha captcha = captchaImage.getCaptcha();
 
         // 保存验证码
-        String uuid = IdUtil.fastSimpleUUID();
+        String uuid = IdUtil.fastUUID();
         String captchaKey = RedisUtils.formatKey(CacheConsts.CAPTCHA_KEY_PREFIX, uuid);
         RedisUtils.setCacheObject(captchaKey, captcha.text(),
             Duration.ofMinutes(captchaImage.getExpirationInMinutes()));