diff --git a/src/main.ts b/src/main.ts
index 65eadb9..395dad9 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -16,7 +16,7 @@ async function bootstrap() {
       'http://localhost:8080',
       'https://p-a-d.store',
     ],
-    methods: ['GET', 'POST', 'PATCH', 'DELETE', 'OPTIONS'], // 💡 GET 포함
+    methods: ['GET', 'POST', 'PATCH', 'DELETE', 'OPTIONS', 'PUT'], // 💡 GET 포함
     credentials: true,
     allowedHeaders: ['Authorization', 'Content-Type'], // 💡 CORS 요청 헤더 허용
     exposedHeaders: ['Authorization'], // 💡 클라이언트에서 응답 헤더 사용 가능
diff --git a/src/modules/auth/auth.service.ts b/src/modules/auth/auth.service.ts
index f3cc7c4..47d3999 100644
--- a/src/modules/auth/auth.service.ts
+++ b/src/modules/auth/auth.service.ts
@@ -24,7 +24,7 @@ export class AuthService {
           code,
           client_id: process.env.GOOGLE_CLIENT_ID,
           client_secret: process.env.GOOGLE_CLIENT_SECRET,
-          redirect_uri: process.env.GOOGLE_CALLBACK_DEVELOP_URL,
+          redirect_uri: process.env.GOOGLE_CALLBACK_DEPLOY_URL,
           grant_type: 'authorization_code',
         }
       );
diff --git a/src/modules/auth/strategies/google.strategy.ts b/src/modules/auth/strategies/google.strategy.ts
index 6d23dba..8a8d799 100644
--- a/src/modules/auth/strategies/google.strategy.ts
+++ b/src/modules/auth/strategies/google.strategy.ts
@@ -9,7 +9,7 @@ export class GoogleStrategy extends PassportStrategy(Strategy, 'google') {
     super({
       clientID: process.env.GOOGLE_CLIENT_ID,
       clientSecret: process.env.GOOGLE_CLIENT_SECRET,
-      callbackURL: process.env.GOOGLE_CALLBACK_DEVELOP_URL,
+      callbackURL: process.env.GOOGLE_CALLBACK_DEPLOY_URL,
       scope: ['email', 'profile'],
     });
   }
diff --git a/src/modules/notification/Interceptors/notification.interceptor.ts b/src/modules/notification/Interceptors/notification.interceptor.ts
index 8bae288..99b63fc 100644
--- a/src/modules/notification/Interceptors/notification.interceptor.ts
+++ b/src/modules/notification/Interceptors/notification.interceptor.ts
@@ -16,7 +16,7 @@ export class SseInterceptor implements NestInterceptor {
       res.setHeader('Content-Type', 'text/event-stream');
       res.setHeader('Cache-Control', 'no-cache, no-transform');
       res.setHeader('Connection', 'keep-alive');
-      res.setHeader('Access-Control-Allow-Origin', 'http://localhost:5173'); // CORS 설정 필요시 추가
+      res.setHeader('Access-Control-Allow-Origin', '*'); // CORS 설정 필요시 추가
       res.setHeader('Access-Control-Allow-Credentials', 'true');
       res.flushHeaders(); // 즉시 헤더를 전송하여 연결이 끊기지 않도록 함
     }
diff --git a/src/modules/project/project.service.ts b/src/modules/project/project.service.ts
index 88c0410..83e0295 100644
--- a/src/modules/project/project.service.ts
+++ b/src/modules/project/project.service.ts
@@ -650,6 +650,11 @@ export class ProjectService {
       where: { id: projectId },
       select: { user_id: true },
     });
+
+    if (!auth) {
+      throw new NotFoundException('프로젝트를 찾을 수 없습니다.');
+    }
+
     return auth.user_id === userId;
   }
 
@@ -825,6 +830,10 @@ export class ProjectService {
         where: { post_id: projectId },
       }),
 
+      this.prisma.userApplyProject.deleteMany({
+        where: { post_id: projectId },
+      }),
+
       this.prisma.projectPost.delete({
         where: { id: projectId },
       }),
diff --git a/src/search/search.service.ts b/src/search/search.service.ts
index 6a8a0e6..5331151 100644
--- a/src/search/search.service.ts
+++ b/src/search/search.service.ts
@@ -254,6 +254,7 @@ export class SearchService {
       viewCount: res.view + 1,
       status: res.recruiting ? 'OPEN' : 'CLOSED',
       isMarked: res.Saves.length,
+      createdAT: res.created_at,
     }));
     return projects;
   }