Описание изменений

backend/package.json

@@ -2,7 +2,6 @@
   "name": "backend",
   "version": "1.0.0",
   "license": "MIT",
-  "type": "module",
   "scripts": {
     "compile": "hardhat compile",
     "deploy": "hardhat run scripts/deploy.js --network sepolia",
@@ -14,16 +13,16 @@
     "cors": "^2.8.5",
     "express": "^4.18.3",
     "express-session": "^1.18.0",
-    "hardhat": "^2.20.1",
-    "siwe": "^3.0.0",
-    "nodemon": "^3.1.0"
+    "nodemon": "^3.1.0",
+    "siwe": "^3.0.0"
   },
   "devDependencies": {
+    "hardhat": "^2.21.0",
     "@nomicfoundation/hardhat-ethers": "^3.0.5",
     "@nomicfoundation/hardhat-chai-matchers": "^2.0.0",
-    "@types/sinon-chai": "^3.2.3",
+    "@openzeppelin/contracts": "4.9.3",
     "chai": "4.3.7",
     "dotenv": "^16.4.7",
     "ethers": "^6.11.1"
   }
-}
+}