diff --git a/backend/src/auth/dto/authSignIn.dto.ts b/backend/src/auth/dto/authSignIn.dto.ts
index 42e7cb91..b56e79ed 100644
--- a/backend/src/auth/dto/authSignIn.dto.ts
+++ b/backend/src/auth/dto/authSignIn.dto.ts
@@ -1,8 +1,6 @@
-import { PickType } from "@nestjs/swagger";
 import { IsEmail, IsOptional, IsString } from "class-validator";
-import { UserDTO } from "src/user/dto/user.dto";
 
-export class AuthSignInDTO extends PickType(UserDTO, ["password"] as const) {
+export class AuthSignInDTO {
   @IsEmail()
   @IsOptional()
   email: string;
@@ -10,4 +8,7 @@ export class AuthSignInDTO extends PickType(UserDTO, ["password"] as const) {
   @IsString()
   @IsOptional()
   username: string;
+
+  @IsString()
+  password: string;
 }
diff --git a/frontend/src/components/auth/SignInForm.tsx b/frontend/src/components/auth/SignInForm.tsx
index 17beb333..eda6f964 100644
--- a/frontend/src/components/auth/SignInForm.tsx
+++ b/frontend/src/components/auth/SignInForm.tsx
@@ -81,10 +81,7 @@ const SignInForm = ({ redirectPath }: { redirectPath: string }) => {
 
   const validationSchema = yup.object().shape({
     emailOrUsername: yup.string().required(t("common.error.field-required")),
-    password: yup
-      .string()
-      .min(8, t("common.error.too-short", { length: 8 }))
-      .required(t("common.error.field-required")),
+    password: yup.string().required(t("common.error.field-required")),
   });
 
   const form = useForm({