diff --git a/hardhat.config.js b/hardhat.config.js
index 5f0876e..0080d3f 100644
--- a/hardhat.config.js
+++ b/hardhat.config.js
@@ -30,7 +30,7 @@ module.exports = {
     testnet: {
       url: process.env.RPC_URL,
       accounts: [`0x${process.env.PK}`],
-      chainId: process.env.CHAIN_ID,
+      chainId: parseInt(process.env.CHAIN_ID),
       gas: "auto",
     },
   },