diff --git a/build.gradle b/build.gradle
index efac671..f7dfd69 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ plugins {
 
 group = 'site.easy-startup'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '17'
+sourceCompatibility = '8'
 
 configurations {
 	compileOnly {
diff --git a/src/main/java/site/easystartup/easystartupcore/pojects/controller/ProjectController.java b/src/main/java/site/easystartup/easystartupcore/poject/controller/ProjectController.java
similarity index 80%
rename from src/main/java/site/easystartup/easystartupcore/pojects/controller/ProjectController.java
rename to src/main/java/site/easystartup/easystartupcore/poject/controller/ProjectController.java
index a2101bb..ffd0218 100644
--- a/src/main/java/site/easystartup/easystartupcore/pojects/controller/ProjectController.java
+++ b/src/main/java/site/easystartup/easystartupcore/poject/controller/ProjectController.java
@@ -1,4 +1,4 @@
-package site.easystartup.easystartupcore.pojects.controller;
+package site.easystartup.easystartupcore.poject.controller;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Controller;
diff --git a/src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Participant.java b/src/main/java/site/easystartup/easystartupcore/poject/domain/model/Participant.java
similarity index 92%
rename from src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Participant.java
rename to src/main/java/site/easystartup/easystartupcore/poject/domain/model/Participant.java
index fe1b376..cb0f739 100644
--- a/src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Participant.java
+++ b/src/main/java/site/easystartup/easystartupcore/poject/domain/model/Participant.java
@@ -1,4 +1,4 @@
-package site.easystartup.easystartupcore.pojects.domain.model;
+package site.easystartup.easystartupcore.poject.domain.model;
 
 import lombok.Data;
 import site.easystartup.easystartupcore.domain.User;
diff --git a/src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Project.java b/src/main/java/site/easystartup/easystartupcore/poject/domain/model/Project.java
similarity index 95%
rename from src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Project.java
rename to src/main/java/site/easystartup/easystartupcore/poject/domain/model/Project.java
index 6985e89..da6121a 100644
--- a/src/main/java/site/easystartup/easystartupcore/pojects/domain/model/Project.java
+++ b/src/main/java/site/easystartup/easystartupcore/poject/domain/model/Project.java
@@ -1,4 +1,4 @@
-package site.easystartup.easystartupcore.pojects.domain.model;
+package site.easystartup.easystartupcore.poject.domain.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.Data;
diff --git a/src/main/java/site/easystartup/easystartupcore/pojects/repo/ProjectRepo.java b/src/main/java/site/easystartup/easystartupcore/poject/repo/ProjectRepo.java
similarity index 61%
rename from src/main/java/site/easystartup/easystartupcore/pojects/repo/ProjectRepo.java
rename to src/main/java/site/easystartup/easystartupcore/poject/repo/ProjectRepo.java
index 46cdeff..790edcc 100644
--- a/src/main/java/site/easystartup/easystartupcore/pojects/repo/ProjectRepo.java
+++ b/src/main/java/site/easystartup/easystartupcore/poject/repo/ProjectRepo.java
@@ -1,8 +1,8 @@
-package site.easystartup.easystartupcore.pojects.repo;
+package site.easystartup.easystartupcore.poject.repo;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
-import site.easystartup.easystartupcore.pojects.domain.model.Project;
+import site.easystartup.easystartupcore.poject.domain.model.Project;
 
 @Repository
 public interface ProjectRepo extends JpaRepository<Project, Long> {
diff --git a/src/main/java/site/easystartup/easystartupcore/pojects/service/ProjectService.java b/src/main/java/site/easystartup/easystartupcore/poject/service/ProjectService.java
similarity index 61%
rename from src/main/java/site/easystartup/easystartupcore/pojects/service/ProjectService.java
rename to src/main/java/site/easystartup/easystartupcore/poject/service/ProjectService.java
index bd31ce0..63d22a7 100644
--- a/src/main/java/site/easystartup/easystartupcore/pojects/service/ProjectService.java
+++ b/src/main/java/site/easystartup/easystartupcore/poject/service/ProjectService.java
@@ -1,8 +1,8 @@
-package site.easystartup.easystartupcore.pojects.service;
+package site.easystartup.easystartupcore.poject.service;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
-import site.easystartup.easystartupcore.pojects.repo.ProjectRepo;
+import site.easystartup.easystartupcore.poject.repo.ProjectRepo;
 
 @Service
 @RequiredArgsConstructor
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 96ccdf5..15705f3 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -7,5 +7,6 @@ spring.sql.init.mode=always
 spring.sql.init.platform=postgres
 spring.datasource.url=jdbc:postgresql://localhost:5432/testdb
 spring.datasource.username=postgres
-spring.datasource.password=root
+#spring.datasource.password=root
+spring.datasource.password=postgres