diff --git a/_data/chains/eip155-421611.json b/_data/chains/eip155-421611.json
index f01b9b59..e883727e 100644
--- a/_data/chains/eip155-421611.json
+++ b/_data/chains/eip155-421611.json
@@ -18,6 +18,11 @@
   ],
   "infoURL": "https://arbitrum.io",
   "explorers": [
+    {
+      "name": "arbiscan-testnet",
+      "url": "https://testnet.arbiscan.io",
+      "standard": "EIP3091"
+    },
     {
       "name": "arbitrum-rinkeby",
       "url": "https://rinkeby-explorer.arbitrum.io",