diff --git a/prd/src/main/java/site/ocr/prd/contorllers/LoginController.java b/prd/src/main/java/site/ocr/prd/contorllers/LoginController.java
index 5b322f7..39bce53 100644
--- a/prd/src/main/java/site/ocr/prd/contorllers/LoginController.java
+++ b/prd/src/main/java/site/ocr/prd/contorllers/LoginController.java
@@ -70,7 +70,7 @@ public class LoginController {
         UserInfoInqyResDTO userInfoInqyResponse = loginService.getUserInfo(userInfoInqyRequest);
         System.out.println("사용자정보 :: " + userInfoInqyResponse.toString());
 
-        ResponseCookie cookie = loginService.createJwtCookie(Long.parseLong(userInfoInqyResponse.getId()));
+        ResponseCookie cookie = loginService.createJwtCookie(userInfoInqyResponse.getId());
 
         Map<String, Object> response = new java.util.HashMap<>();
         response.put("success", true);
@@ -89,7 +89,7 @@ public class LoginController {
      * @return 로그인 결과 및 JWT 토큰
      */
     @GetMapping("/oauth/get-jwt-token")
-    public ResponseEntity<Map<String, String>> getJwtToken(@RequestParam Long userId) {
+    public ResponseEntity<Map<String, String>> getJwtToken(@RequestParam String userId) {
         ResponseCookie cookie = loginService.createJwtCookie(userId);
         Map<String, String> response = new java.util.HashMap<>();
         response.put("token", cookie.toString());
diff --git a/prd/src/main/java/site/ocr/prd/services/LoginService.java b/prd/src/main/java/site/ocr/prd/services/LoginService.java
index c456b29..d96934d 100644
--- a/prd/src/main/java/site/ocr/prd/services/LoginService.java
+++ b/prd/src/main/java/site/ocr/prd/services/LoginService.java
@@ -76,7 +76,7 @@ public class LoginService {
      * @param userId 사용자 ID
      * @return ResponseCookie JWT 토큰이 포함된 쿠키
      */
-    public ResponseCookie createJwtCookie(Long userId) {
+    public ResponseCookie createJwtCookie(String userId) {
         String jwt = jwtProvider.createJwtToken(userId);
         return ResponseCookie.from("accessToken", jwt)
         .httpOnly(true)