diff --git a/backend-node/src/services/screenManagementService.ts b/backend-node/src/services/screenManagementService.ts
index afca0251..0f5f9b38 100644
--- a/backend-node/src/services/screenManagementService.ts
+++ b/backend-node/src/services/screenManagementService.ts
@@ -4334,11 +4334,10 @@ export class ScreenManagementService {
       throw new Error("이 화면의 레이아웃을 저장할 권한이 없습니다.");
     }
 
-    // 버전 정보 추가
+    // 버전 정보 추가 (updatedAt은 DB 컬럼 updated_at으로 관리)
     const dataToSave = {
       version: "2.0",
-      ...layoutData,
-      updatedAt: new Date().toISOString()
+      ...layoutData
     };
 
     // UPSERT (있으면 업데이트, 없으면 삽입)
diff --git a/frontend/lib/schemas/componentConfig.ts b/frontend/lib/schemas/componentConfig.ts
index f45fc49b..5e008b7f 100644
--- a/frontend/lib/schemas/componentConfig.ts
+++ b/frontend/lib/schemas/componentConfig.ts
@@ -971,6 +971,5 @@ export function saveLayoutV2(components: Array<ComponentV2 & { config?: Record<s
   return {
     version: "2.0",
     components: components.map(saveComponentV2),
-    updatedAt: new Date().toISOString(),
   };
 }
diff --git a/frontend/lib/utils/layoutV2Converter.ts b/frontend/lib/utils/layoutV2Converter.ts
index 65da6238..a7257bfd 100644
--- a/frontend/lib/utils/layoutV2Converter.ts
+++ b/frontend/lib/utils/layoutV2Converter.ts
@@ -136,7 +136,6 @@ export function convertLegacyToV2(legacyLayout: LegacyLayoutData): LayoutV2 {
   return {
     version: "2.0",
     components,
-    updatedAt: new Date().toISOString(),
   };
 }