diff --git a/back/src/wos/wos.service.ts b/back/src/wos/wos.service.ts
index a649e0d..7f22b33 100644
--- a/back/src/wos/wos.service.ts
+++ b/back/src/wos/wos.service.ts
@@ -9,6 +9,15 @@ import { CouponLog } from '../entities/coupon-log.entity';
 const SECRET = 'tB87#kPtkxqOS2';
 const WOS_API_BASE = 'https://wos-giftcode-api.centurygame.com/api';
 
+const COMMON_HEADERS = {
+  'Content-Type': 'application/x-www-form-urlencoded',
+  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36',
+  'Accept': 'application/json, text/plain, */*',
+  'Accept-Language': 'ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7',
+  'Origin': 'https://wos-giftcode.centurygame.com',
+  'Referer': 'https://wos-giftcode.centurygame.com/',
+};
+
 const ERR_MESSAGES: Record<number, string> = {
   20000: '쿠폰 코드가 존재하지 않습니다.',
   20001: '이미 사용된 쿠폰입니다.',
@@ -41,7 +50,7 @@ export class WosService {
     const response = await axios.post(
       `${WOS_API_BASE}/player`,
       new URLSearchParams({ fid, time: String(timestamp), sign }),
-      { headers: { 'Content-Type': 'application/x-www-form-urlencoded' } },
+      { headers: { ...COMMON_HEADERS } },
     );
 
     const data = response.data;
@@ -74,7 +83,7 @@ export class WosService {
       `${WOS_API_BASE}/captcha`,
       new URLSearchParams({ fid, time: String(timestamp), sign }),
       {
-        headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+        headers: { ...COMMON_HEADERS },
         withCredentials: true,
       },
     );
@@ -115,7 +124,7 @@ export class WosService {
       }),
       {
         headers: {
-          'Content-Type': 'application/x-www-form-urlencoded',
+          ...COMMON_HEADERS,
           Cookie: sessionCookie,
         },
       },