diff --git a/build.gradle b/build.gradle
index 905bfdb..674a9c4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -25,6 +25,7 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 	implementation 'org.springdoc:springdoc-openapi-ui:1.6.12'
+	runtimeOnly 'com.h2database:h2'
 }
 
 tasks.named('test') {
diff --git a/src/main/java/com/hyunsolution/dangu/participant/service/ParticipantService.java b/src/main/java/com/hyunsolution/dangu/participant/service/ParticipantService.java
index 597dd02..deefe78 100644
--- a/src/main/java/com/hyunsolution/dangu/participant/service/ParticipantService.java
+++ b/src/main/java/com/hyunsolution/dangu/participant/service/ParticipantService.java
@@ -7,7 +7,6 @@
 import com.hyunsolution.dangu.workspace.domain.WorkspaceRepository;
 import java.util.List;
 import java.util.NoSuchElementException;
-import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -23,23 +22,29 @@ public class ParticipantService {
     public void changeMatching(Long id, Long workspaceId) {
         // 상태 변경
         Participant participantOptional =
-                participantRepository.findByUserIdAndWorkspaceId(id, workspaceId)
-                        .orElseThrow(()-> new NoSuchElementException("Participant not found"));
+                participantRepository
+                        .findByUserIdAndWorkspaceId(id, workspaceId)
+                        .orElseThrow(() -> new NoSuchElementException("Participant not found"));
 
         participantOptional.accept();
 
         // participant테이블에서 roomNumber로 들어온 숫자를 통해 누가 있는지 파악
-        List<Long> participantIds = participantRepository.findParticipantIdByWorkspaceId(workspaceId);
+        List<Long> participantIds =
+                participantRepository.findParticipantIdByWorkspaceId(workspaceId);
 
         // 방안에 모든 참가자가 "확정"버튼을 눌렀는지 확인
         for (Long participant : participantIds) {
-            boolean mathingCheck = participantRepository.existsByIdAndParticipantMatchTrue(participant);
+            boolean mathingCheck =
+                    participantRepository.existsByIdAndParticipantMatchTrue(participant);
             if (!mathingCheck) {
                 return;
             }
         }
         // 게임방 테이블 속 매칭 결과를 true로 바꿈
-        Workspace workspace1 = workspaceRepository.findById(workspaceId).orElseThrow(()-> new NoSuchElementException("Workspace not found"));
+        Workspace workspace1 =
+                workspaceRepository
+                        .findById(workspaceId)
+                        .orElseThrow(() -> new NoSuchElementException("Workspace not found"));
         workspace1.acceptFinal();
     }
 }
diff --git a/src/main/java/com/hyunsolution/dangu/user/domain/UserRepository.java b/src/main/java/com/hyunsolution/dangu/user/domain/UserRepository.java
index e1d05ec..d4383dd 100644
--- a/src/main/java/com/hyunsolution/dangu/user/domain/UserRepository.java
+++ b/src/main/java/com/hyunsolution/dangu/user/domain/UserRepository.java
@@ -1,8 +1,7 @@
 package com.hyunsolution.dangu.user.domain;
 
-import org.springframework.data.jpa.repository.JpaRepository;
-
 import java.util.Optional;
+import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByUid(String uid);
diff --git a/src/main/java/com/hyunsolution/dangu/workspace/domain/Workspace.java b/src/main/java/com/hyunsolution/dangu/workspace/domain/Workspace.java
index 9815859..0bd51b6 100644
--- a/src/main/java/com/hyunsolution/dangu/workspace/domain/Workspace.java
+++ b/src/main/java/com/hyunsolution/dangu/workspace/domain/Workspace.java
@@ -1,6 +1,7 @@
 package com.hyunsolution.dangu.workspace.domain;
 
 import com.hyunsolution.dangu.user.domain.User;
+import java.time.LocalDateTime;
 import javax.persistence.*;
 import lombok.AccessLevel;
 import lombok.Builder;
@@ -9,8 +10,6 @@
 import org.hibernate.annotations.ColumnDefault;
 import org.springframework.data.annotation.CreatedDate;
 
-import java.time.LocalDateTime;
-
 @Entity
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
diff --git a/src/main/java/com/hyunsolution/dangu/workspace/service/WorkspaceService.java b/src/main/java/com/hyunsolution/dangu/workspace/service/WorkspaceService.java
index 43dab8b..db9a121 100644
--- a/src/main/java/com/hyunsolution/dangu/workspace/service/WorkspaceService.java
+++ b/src/main/java/com/hyunsolution/dangu/workspace/service/WorkspaceService.java
@@ -6,11 +6,8 @@
 import com.hyunsolution.dangu.workspace.domain.Workspace;
 import com.hyunsolution.dangu.workspace.domain.WorkspaceRepository;
 import com.hyunsolution.dangu.workspace.dto.response.GetWorkspacesResponse;
-
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.List;
-
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
@@ -30,8 +27,13 @@ public List<GetWorkspacesResponse> getWorkspaces() {
         LocalDateTime dateFilter = LocalDateTime.now().minusDays(1);
         return workSpaceRepository.findAll().stream()
                 .filter(workspace -> !workspace.isMatched())
-                .filter(workspace -> workspace.getCreatedAt().isAfter(dateFilter)) //게임방 조회: 유지 시간은 24h
-                .map(workspace ->GetWorkspacesResponse.of(workspace.getId(), workspace.getCreator().getUid()))
+                .filter(
+                        workspace ->
+                                workspace.getCreatedAt().isAfter(dateFilter)) // 게임방 조회: 유지 시간은 24h
+                .map(
+                        workspace ->
+                                GetWorkspacesResponse.of(
+                                        workspace.getId(), workspace.getCreator().getUid()))
                 .toList();
     }
 }