diff --git a/backend/src/middleware/errorHandler.ts b/backend/src/middleware/errorHandler.ts
index 35e195b..09ddf2d 100644
--- a/backend/src/middleware/errorHandler.ts
+++ b/backend/src/middleware/errorHandler.ts
@@ -22,5 +22,12 @@ export function errorHandler(
   }
 
   console.error('[Error]', err);
+
+  const prismaCode = (err as { code?: string }).code;
+  if (prismaCode === 'P2022') {
+    res.status(500).json({ message: 'DB 스키마가 최신이 아닙니다. 배포 후 다시 시도해 주세요.' });
+    return;
+  }
+
   res.status(500).json({ message: '서버 오류가 발생했습니다.' });
 }
diff --git a/backend/src/routes/tasks.ts b/backend/src/routes/tasks.ts
index 0de1a89..af1153a 100644
--- a/backend/src/routes/tasks.ts
+++ b/backend/src/routes/tasks.ts
@@ -34,8 +34,9 @@ router.get('/', async (req, res, next) => {
 // GET /api/tasks/:id  — 단건 상세 조회
 router.get('/:id', async (req, res, next) => {
   try {
+    const taskId = String(req.params.id);
     const task = await prisma.task.findUnique({
-      where: { id: req.params.id },
+      where: { id: taskId },
       include: {
         assignee: { select: { id: true, name: true, department: true } },
         creator: { select: { id: true, name: true } },
diff --git a/render.yaml b/render.yaml
index ceffcf8..6b76cf8 100644
--- a/render.yaml
+++ b/render.yaml
@@ -3,8 +3,8 @@ services:
     name: eene-dashboard-backend
     runtime: node
     rootDir: backend
-    buildCommand: npm install --include=dev && npx prisma migrate deploy || npx prisma db push && npx prisma generate && npm run build
-    startCommand: npm start
+    buildCommand: npm install --include=dev && (npx prisma migrate deploy || true) && npx prisma db push && npx prisma generate && npm run build
+    startCommand: npx prisma db push && npm start
     envVars:
       - key: DATABASE_URL
         sync: false   # Render 대시보드에서 직접 입력