diff --git a/backend/package.json b/backend/package.json
index adfd563..ec8f818 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -23,6 +23,7 @@
     "jsonwebtoken": "^8.5.1",
     "multer": "^1.4.2",
     "mysql2": "^2.2.5",
+    "pg": "^8.4.1",
     "qrcode-terminal": "^0.12.0",
     "reflect-metadata": "^0.1.13",
     "sequelize": "^5.22.3",