diff --git a/_data/chains/eip155-999.json b/_data/chains/eip155-999.json
index 179f5c332a4c..738d816fe2ad 100644
--- a/_data/chains/eip155-999.json
+++ b/_data/chains/eip155-999.json
@@ -1,25 +1,24 @@
 {
-  "name": "Wanchain Testnet",
-  "chain": "WAN",
-  "rpc": ["https://gwan-ssl.wandevs.org:46891/"],
+  "name": "HyperEVM",
+  "chain": "HYPE",
+  "rpc": ["https://rpc.hyperliquid.xyz/evm", "https://rpc.hypurrscan.io"],
   "faucets": [],
   "nativeCurrency": {
-    "name": "Wancoin",
-    "symbol": "WAN",
+    "name": "HYPE",
+    "symbol": "HYPE",
     "decimals": 18
   },
-  "infoURL": "https://testnet.wanscan.org",
-  "shortName": "twan",
+  "infoURL": "https://hyperliquid.gitbook.io/hyperliquid-docs/hyperevm",
+  "shortName": "hyperevm",
   "chainId": 999,
   "networkId": 999,
-  "slip44": 1,
-  "icon": "wanchain",
+  "icon": "hyperliquid",
   "explorers": [
     {
-      "name": "wanscan",
-      "icon": "wanchain",
-      "url": "https://testnet.wanscan.org",
-      "standard": "EIP3091"
+      "name": "Purrsec",
+      "url": "https://purrsec.com",
+      "standard": "none"
     }
-  ]
+  ],
+  "redFlags": ["reusedChainId"]
 }
diff --git a/_data/icons/hyperliquid.json b/_data/icons/hyperliquid.json
new file mode 100644
index 000000000000..bc5f2de5a35c
--- /dev/null
+++ b/_data/icons/hyperliquid.json
@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://bafkreigpr33acipddjlp3xqds6nlko5kxbuydafp623v55vaartph7vvme",
+    "width": 576,
+    "height": 576,
+    "format": "svg"
+  }
+]