diff --git a/backend/package.json b/backend/package.json
index 97e86c74..b7ac7a32 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -24,6 +24,7 @@
     "@nestjs/cli": "^10.3.0",
     "@nestjs/schematics": "^10.1.1",
     "@nestjs/testing": "^10.3.0",
+    "@types/express": "^4.17.21",
     "@types/node": "^22.15.29",
     "prisma": "^6.12.0",
     "typescript": "^5.4.5"