diff --git a/src/main/java/sevenstar/marineleisure/member/service/OauthService.java b/src/main/java/sevenstar/marineleisure/member/service/OauthService.java
index 82dfe80c..031d8104 100644
--- a/src/main/java/sevenstar/marineleisure/member/service/OauthService.java
+++ b/src/main/java/sevenstar/marineleisure/member/service/OauthService.java
@@ -18,12 +18,11 @@
 import com.github.benmanes.caffeine.cache.Cache;
 import com.github.benmanes.caffeine.cache.Caffeine;
 
-import ch.qos.logback.core.joran.action.ParamAction;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.transaction.Transactional;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import sevenstar.marineleisure.global.util.PkceUtil;
+import sevenstar.marineleisure.global.enums.MemberStatus;
 import sevenstar.marineleisure.global.util.StateEncryptionUtil;
 import sevenstar.marineleisure.member.domain.Member;
 import sevenstar.marineleisure.member.dto.KakaoTokenResponse;
@@ -37,7 +36,6 @@ public class OauthService {
 	private final MemberRepository memberRepository;
 	private final WebClient webClient;
 	private final StateEncryptionUtil stateEncryptionUtil;
-	private final PkceUtil pkceUtil;
 
 	@Value("${kakao.login.api_key}")
 	private String apiKey;
@@ -45,6 +43,9 @@ public class OauthService {
 	@Value("${kakao.login.client_secret}")
 	private String clientSecret;
 
+	@Value("${kakao.login.admin_key}")
+	private String adminKey;
+
 	@Value("${kakao.login.uri.base}")
 	private String kakaoBaseUri;
 
@@ -206,6 +207,7 @@ private Member saveOrUpdateKakaoUser(Map<String, Object> memberAttributes) {
 				.longitude(BigDecimal.ZERO)
 				.build());
 		member.updateNickname(nickname);
+		member.updateStatus(MemberStatus.ACTIVE);  // 재가입 시 상태를 ACTIVE로 변경
 
 		return memberRepository.save(member);
 	}
@@ -234,7 +236,7 @@ public Long unlinkKakaoAccount(String providerId) {
 
 		Map<String, Object> response = webClient.post()
 			.uri(unlinkUrl)
-			.header("Authorization", "KakaoAK " + clientSecret)
+			.header("Authorization", "KakaoAK " + adminKey)
 			.header("Content-Type", "application/x-www-form-urlencoded;charset=utf-8")
 			.body(BodyInserters.fromFormData(params))
 			.retrieve()
diff --git a/src/main/resources/application-prod.yml b/src/main/resources/application-prod.yml
index 128dc48d..bab7bc62 100644
--- a/src/main/resources/application-prod.yml
+++ b/src/main/resources/application-prod.yml
@@ -61,6 +61,7 @@ kakao:
   login:
     api_key: ${KAKAO_API_KEY}
     client_secret: ${KAKAO_CLIENT_SECRET}
+    admin_key: ${KAKAO_ADMIN_KEY}
     redirect_uri: ${KAKAO_REDIRECT_URI}
 
     uri:
@@ -70,6 +71,6 @@ kakao:
     uri: https://dapi.kakao.com/v2/local/geo/coord2regioncode
 jwt:
   secret: ${JWT_SECRET}
-  access-token-validity-in-seconds: 300
+  access-token-validity-in-seconds: 3600
   refresh-token-validity-in-seconds: 86400  # 24시간
   use-cookie: false # 개발 환경에서. 클라이언트 개발 완료 후 쿠키 사용 방식으로 변경.
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