diff --git a/backend/core/src/main/java/com/rollthedice/backend/domain/member/service/MemberService.java b/backend/core/src/main/java/com/rollthedice/backend/domain/member/service/MemberService.java
index f41faeb4..23233ae1 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/domain/member/service/MemberService.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/domain/member/service/MemberService.java
@@ -5,12 +5,14 @@
 import com.rollthedice.backend.domain.member.query.AuthService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @RequiredArgsConstructor
 @Service
 public class MemberService {
     private final AuthService authService;
 
+    @Transactional
     public void signUp(SignUpDto dto) {
         Member member = authService.getMember();
         member.updateNickname(dto.getNickname());