diff --git a/src/main/java/jungle/HandTris/application/impl/ReissueServiceImpl.java b/src/main/java/jungle/HandTris/application/impl/ReissueServiceImpl.java
index c6b8ff0..69d2958 100644
--- a/src/main/java/jungle/HandTris/application/impl/ReissueServiceImpl.java
+++ b/src/main/java/jungle/HandTris/application/impl/ReissueServiceImpl.java
@@ -4,6 +4,7 @@
 import jungle.HandTris.application.service.ReissueService;
 import jungle.HandTris.domain.Member;
 import jungle.HandTris.domain.exception.InvalidTokenFormatException;
+import jungle.HandTris.domain.exception.MemberNotFoundException;
 import jungle.HandTris.domain.exception.RefreshTokenExpiredException;
 import jungle.HandTris.domain.exception.UnauthorizedAccessException;
 import jungle.HandTris.domain.repo.MemberRepository;
@@ -19,7 +20,7 @@ public class ReissueServiceImpl implements ReissueService {
     private final JWTUtil jwtUtil;
     private final MemberRepository memberRepository;
 
-    public ReissueTokenRes reissue (HttpServletRequest request, String requestUsername) {
+    public ReissueTokenRes reissue (HttpServletRequest request) {
         String refreshToken = jwtUtil.resolveRefreshToken(request);
 
         //토큰 소멸 시간 검증
@@ -34,7 +35,8 @@ public ReissueTokenRes reissue (HttpServletRequest request, String requestUserna
         }
 
         String nickname = jwtUtil.getNickname(refreshToken);
-        Member member = memberRepository.findByUsername(requestUsername);
+        Member member = memberRepository.findByNickname(nickname).
+                orElseThrow(MemberNotFoundException::new);
 
         if(!member.getRefreshToken().equals(refreshToken)) {
             throw new UnauthorizedAccessException();
diff --git a/src/main/java/jungle/HandTris/application/service/ReissueService.java b/src/main/java/jungle/HandTris/application/service/ReissueService.java
index ebeb775..55c614e 100644
--- a/src/main/java/jungle/HandTris/application/service/ReissueService.java
+++ b/src/main/java/jungle/HandTris/application/service/ReissueService.java
@@ -4,5 +4,5 @@
 import jungle.HandTris.presentation.dto.response.ReissueTokenRes;
 
 public interface ReissueService {
-    ReissueTokenRes reissue (HttpServletRequest request, String requestUsername);
+    ReissueTokenRes reissue (HttpServletRequest request);
 }
diff --git a/src/main/java/jungle/HandTris/global/config/security/SecurityConfig.java b/src/main/java/jungle/HandTris/global/config/security/SecurityConfig.java
index 79c7a6f..4139436 100644
--- a/src/main/java/jungle/HandTris/global/config/security/SecurityConfig.java
+++ b/src/main/java/jungle/HandTris/global/config/security/SecurityConfig.java
@@ -2,10 +2,7 @@
 
 import jungle.HandTris.application.service.CustomOAuth2MemberService;
 import jungle.HandTris.global.filter.JWTFilter;
-import jungle.HandTris.global.handler.JWTAccessDeniedHandler;
-import jungle.HandTris.global.handler.JWTAuthenticateDeniedHandler;
-import jungle.HandTris.global.handler.OAuth2FailureHandler;
-import jungle.HandTris.global.handler.OAuth2SuccessHandler;
+import jungle.HandTris.global.handler.*;
 import jungle.HandTris.global.jwt.JWTUtil;
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
@@ -47,7 +44,8 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
                 .httpBasic((auth) -> auth.disable()
                 )
                 .authorizeHttpRequests((auth) -> auth
-                        .requestMatchers("/", "/auth/signin", "/auth/signup", "/reissue/**", "/oauth2/loginSuccess", "ws/**").permitAll()
+                        .requestMatchers("/", "/auth/signin", "/auth/signup",
+                                "/reissue", "/oauth2/loginSuccess", "ws/**", "/actuator/prometheus").permitAll()
                         .anyRequest().authenticated()
                 )
                 .cors(Customizer.withDefaults()
diff --git a/src/main/java/jungle/HandTris/presentation/ReissueController.java b/src/main/java/jungle/HandTris/presentation/ReissueController.java
index 47685d2..b4ac202 100644
--- a/src/main/java/jungle/HandTris/presentation/ReissueController.java
+++ b/src/main/java/jungle/HandTris/presentation/ReissueController.java
@@ -15,9 +15,9 @@ public class ReissueController {
 
     private final ReissueService reissueService;
 
-    @PostMapping("/reissue/{username}")
-    public ResponseEnvelope<ReissueTokenRes> reissue (HttpServletRequest request, @PathVariable("username") String requestUsername) {
-        ReissueTokenRes token = reissueService.reissue(request, requestUsername);
+    @PostMapping("/reissue")
+    public ResponseEnvelope<ReissueTokenRes> reissue (HttpServletRequest request) {
+        ReissueTokenRes token = reissueService.reissue(request);
 
         return ResponseEnvelope.of(token);
     }