diff --git a/package-lock.json b/package-lock.json
index 0cd390e..5aa1bb4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "tsx": "^4.20.6"
       },
       "devDependencies": {
-        "@nomicfoundation/hardhat-ethers": "^3.1.3",
+        "@nomicfoundation/hardhat-ethers": "^4.0.13",
         "@types/express": "^5.0.5",
         "@types/node": "^24.10.1",
         "@types/pg": "^8.20.0",
@@ -1511,19 +1511,46 @@
         "node": ">= 20"
       }
     },
+    "node_modules/@nomicfoundation/hardhat-errors": {
+      "version": "3.0.15",
+      "resolved": "https://registry.npmjs.org/@nomicfoundation/hardhat-errors/-/hardhat-errors-3.0.15.tgz",
+      "integrity": "sha512-h3r32RzpmWEcB2bz6aqZKlKOP8tzyvHLkPFleFFqwVvjO5AUfSoMUxm8OjaTuNgPF35mXPYRISh+kNCwmsKVOA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@nomicfoundation/hardhat-utils": "^4.1.3"
+      }
+    },
     "node_modules/@nomicfoundation/hardhat-ethers": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/@nomicfoundation/hardhat-ethers/-/hardhat-ethers-3.1.3.tgz",
-      "integrity": "sha512-208JcDeVIl+7Wu3MhFUUtiA8TJ7r2Rn3Wr+lSx9PfsDTKkbsAsWPY6N6wQ4mtzDv0/pB9nIbJhkjoHe1EsgNsA==",
+      "version": "4.0.13",
+      "resolved": "https://registry.npmjs.org/@nomicfoundation/hardhat-ethers/-/hardhat-ethers-4.0.13.tgz",
+      "integrity": "sha512-HBiWoMFf7tLr1X3T82mKHXUSEuHU7PVUibWmfP6gSn5l38RQbcrt/f64zoNbyHh6pdiC7WwQPJHP3bCAfbd2oA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "debug": "^4.1.1",
-        "lodash.isequal": "^4.5.0"
+        "@nomicfoundation/hardhat-errors": "^3.0.15",
+        "@nomicfoundation/hardhat-utils": "^4.1.2",
+        "ethereum-cryptography": "^2.2.1",
+        "ethers": "^6.14.0"
       },
       "peerDependencies": {
-        "ethers": "^6.14.0",
-        "hardhat": "^2.28.0"
+        "hardhat": "^3.8.0"
+      }
+    },
+    "node_modules/@nomicfoundation/hardhat-utils": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/@nomicfoundation/hardhat-utils/-/hardhat-utils-4.1.3.tgz",
+      "integrity": "sha512-SYDKX6SCdzs/5mC/S1D+AjNSQJrhxevHTI24TIouIjO0Xs0dB0+S4cYCqHWOgvnHLshrcrJ7XGUjS7+apWa1Tw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@streamparser/json-node": "^0.0.22",
+        "env-paths": "^2.2.0",
+        "ethereum-cryptography": "^2.2.1",
+        "fast-equals": "^5.4.0",
+        "json-stream-stringify": "^3.1.6",
+        "rfdc": "^1.3.1",
+        "undici": "^6.16.1"
       }
     },
     "node_modules/@nomicfoundation/solidity-analyzer": {
@@ -2208,6 +2235,23 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@streamparser/json": {
+      "version": "0.0.22",
+      "resolved": "https://registry.npmjs.org/@streamparser/json/-/json-0.0.22.tgz",
+      "integrity": "sha512-b6gTSBjJ8G8SuO3Gbbj+zXbVx8NSs1EbpbMKpzGLWMdkR+98McH9bEjSz3+0mPJf68c5nxa3CrJHp5EQNXM6zQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@streamparser/json-node": {
+      "version": "0.0.22",
+      "resolved": "https://registry.npmjs.org/@streamparser/json-node/-/json-node-0.0.22.tgz",
+      "integrity": "sha512-sJT2ptNRwqB1lIsQrQlCoWk5rF4tif9wDh+7yluAGijJamAhrHGYpFB/Zg3hJeceoZypi74ftXk8DHzwYpbZSg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@streamparser/json": "^0.0.22"
+      }
+    },
     "node_modules/@tybys/wasm-util": {
       "version": "0.10.2",
       "resolved": "https://registry.npmjs.org/@tybys/wasm-util/-/wasm-util-0.10.2.tgz",
@@ -4417,6 +4461,16 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
       "license": "MIT"
     },
+    "node_modules/fast-equals": {
+      "version": "5.4.0",
+      "resolved": "https://registry.npmjs.org/fast-equals/-/fast-equals-5.4.0.tgz",
+      "integrity": "sha512-jt2DW/aNFNwke7AUd+Z+e6pz39KO5rzdbbFCg2sGafS4mk13MI7Z8O5z9cADNn5lhGODIgLwug6TZO2ctf7kcw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/fast-uri": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.2.tgz",
@@ -5785,14 +5839,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/lodash.isequal": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
-      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ==",
-      "deprecated": "This package is deprecated. Use require('node:util').isDeepStrictEqual instead.",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/log-symbols": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-4.1.0.tgz",
@@ -6769,6 +6815,13 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/rfdc": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.4.1.tgz",
+      "integrity": "sha512-q1b3N5QkRUWUl7iyylaaj3kOpIT0N2i9MqIEQXP73GVsN9cw3fdx8X63cEmWhJGi2PPCF23Ijp7ktmd39rawIA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/rolldown": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.0.3.tgz",
diff --git a/package.json b/package.json
index 492b575..85b3cb1 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "tsx": "^4.20.6"
   },
   "devDependencies": {
-    "@nomicfoundation/hardhat-ethers": "^3.1.3",
+    "@nomicfoundation/hardhat-ethers": "^4.0.13",
     "@types/express": "^5.0.5",
     "@types/node": "^24.10.1",
     "@types/pg": "^8.20.0",