diff --git a/index.js b/index.js
index 1b78664..de53ed7 100644
--- a/index.js
+++ b/index.js
@@ -111,11 +111,11 @@ const NETWORK =
         color: "#8247e5",
         defaultNFT: "0x5265535c70664EE54c8584bf7Fe62bBD2558A25C"
     },
-    1337: {
-        id: 137,
+    31337: {
+        id: 31337,
         network: "Hardhat",
         chain: "ETH",
-        chainId: 1337,
+        chainId: 31337,
         type: "Local",
         rpc:"",
         explorer: "",
diff --git a/package.json b/package.json
index 8899451..1f888af 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idecentralize/erclib",
-  "version": "1.6.2",
+  "version": "1.6.3",
   "description": "ERC library for blockchain development",
   "main": "index.js",
   "type": "module",