diff --git a/dictation_server/src/common/validators/authorId.validator.ts b/dictation_server/src/common/validators/authorId.validator.ts
index 02ad278..23afafb 100644
--- a/dictation_server/src/common/validators/authorId.validator.ts
+++ b/dictation_server/src/common/validators/authorId.validator.ts
@@ -5,11 +5,26 @@ import {
   ValidationOptions,
   registerDecorator,
 } from 'class-validator';
+import {
+  PostUpdateUserRequest,
+  SignupRequest,
+} from '../../features/users/types/types';
+import { USER_ROLES } from '../../constants';
 
 // 大文字英数字とアンダースコアのみを許可するバリデータ
 @ValidatorConstraint({ name: 'IsAuthorId', async: false })
 export class IsAuthorId implements ValidatorConstraintInterface {
   validate(value: any, args: ValidationArguments) {
+     const request = args.object as SignupRequest | PostUpdateUserRequest;
+    // requestの存在チェック
+    if (!request) {
+      return false;
+    }
+    const { role } = request;
+    // roleがauthor以外の場合はスキップする
+    if (role !== USER_ROLES.AUTHOR) {
+      return true;
+    }
     return /^[A-Z0-9_]*$/.test(value);
   }
   defaultMessage(args: ValidationArguments) {