diff --git a/packages/ethereum-viewer/src/explorer/networks.ts b/packages/ethereum-viewer/src/explorer/networks.ts
index 2dac5cc..ab8c3ce 100644
--- a/packages/ethereum-viewer/src/explorer/networks.ts
+++ b/packages/ethereum-viewer/src/explorer/networks.ts
@@ -30,6 +30,7 @@ export const explorerApiUrls = {
   "sepolia.blastscan": "https://api-sepolia.blastscan.io/api",
   sonicscan: "https://api.etherscan.io/v2/api?chainid=146",
   "testnet.sonicscan": "https://api-testnet.sonicscan.org/api",
+  hyperevmscan: "https://api.etherscan.io/v2/api?chainid=999",
 };
 
 /**
@@ -68,6 +69,7 @@ export const networkNames: Record<ApiName, string> = {
   "sepolia.blastscan": "blastSepolia",
   sonicscan: "sonic",
   "testnet.sonicscan": "sonicTestnet",
+  hyperevmscan: "hyperevm",
 };
 
 const ETHERSCAN_KEY = "P1JB3MQB5BB92A6K4C48HZKMCK7R8TIWIH";
@@ -126,4 +128,5 @@ export const explorerApiKeys: Record<ApiName, string> = {
 
   sonicscan: ETHERSCAN_KEY,
   "testnet.sonicscan": SONICSCAN_KEY,
+  hyperevmscan: ETHERSCAN_KEY,
 };