diff --git a/_data/chains/eip155-4061.json b/_data/chains/eip155-4061.json
new file mode 100644
index 00000000..69f0dbf0
--- /dev/null
+++ b/_data/chains/eip155-4061.json
@@ -0,0 +1,26 @@
+{
+  "name": "Nahmii 3 Mainnet",
+  "chain": "Nahmii",
+  "rpc": [],
+  "status": "incubating",
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Ether",
+    "symbol": "ETH",
+    "decimals": 18
+  },
+  "infoURL": "https://nahmii.io",
+  "shortName": "Nahmii3Mainnet",
+  "chainId": 4061,
+  "networkId": 4061,
+  "icon": "nahmii",
+  "parent": {
+    "type": "L2",
+    "chain": "eip155-1",
+    "bridges": [
+      {
+        "url": "https://bridge.nahmii.io"
+      }
+    ]
+  }
+}
diff --git a/_data/chains/eip155-4062.json b/_data/chains/eip155-4062.json
new file mode 100644
index 00000000..8e14ae4d
--- /dev/null
+++ b/_data/chains/eip155-4062.json
@@ -0,0 +1,33 @@
+{
+  "name": "Nahmii 3 Testnet",
+  "chain": "Nahmii",
+  "rpc": ["https://ngeth.testnet.n3.nahmii.io"],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Goerli Ether",
+    "symbol": "ETH",
+    "decimals": 18
+  },
+  "infoURL": "https://nahmii.io",
+  "shortName": "Nahmii3Testnet",
+  "chainId": 4062,
+  "networkId": 4062,
+  "icon": "nahmii",
+  "explorers": [
+    {
+      "name": "Nahmii 3 Testnet Explorer",
+      "url": "https://explorer.testnet.n3.nahmii.io",
+      "icon": "nahmii",
+      "standard": "EIP3091"
+    }
+  ],
+  "parent": {
+    "type": "L2",
+    "chain": "eip155-3",
+    "bridges": [
+      {
+        "url": "https://bridge.testnet.n3.nahmii.io"
+      }
+    ]
+  }
+}