diff --git a/src/main/java/com/example/fashionforecastbackend/global/oauth2/service/CustomOauth2UserService.java b/src/main/java/com/example/fashionforecastbackend/global/oauth2/service/CustomOauth2UserService.java
index d907912..dd49251 100644
--- a/src/main/java/com/example/fashionforecastbackend/global/oauth2/service/CustomOauth2UserService.java
+++ b/src/main/java/com/example/fashionforecastbackend/global/oauth2/service/CustomOauth2UserService.java
@@ -3,6 +3,7 @@
 import java.util.Collections;
 import java.util.Map;
 
+import jakarta.transaction.Transactional;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
 import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
@@ -22,6 +23,7 @@
 
 @Slf4j
 @Service
+@Transactional
 @RequiredArgsConstructor
 public class CustomOauth2UserService implements OAuth2UserService<OAuth2UserRequest, OAuth2User> {