diff --git a/_data/chains/1139.json b/_data/chains/1139.json
new file mode 100644
index 00000000..c558969b
--- /dev/null
+++ b/_data/chains/1139.json
@@ -0,0 +1,16 @@
+{
+    "name": "MathChain",
+    "chain": "MATH",
+    "network": "mainnet",
+    "rpc": [],
+    "faucets": [],
+    "nativeCurrency": {
+      "name": "MathChain",
+      "symbol": "MATH",
+      "decimals": 18
+    },
+    "infoURL": "https://mathwallet.org",
+    "shortName": "MATH",
+    "chainId": 1139,
+    "networkId": 1139
+  }
\ No newline at end of file
diff --git a/_data/chains/1140.json b/_data/chains/1140.json
new file mode 100644
index 00000000..bd8be432
--- /dev/null
+++ b/_data/chains/1140.json
@@ -0,0 +1,16 @@
+{
+    "name": "MathChain Testnet",
+    "chain": "MATH",
+    "network": "testnet",
+    "rpc": [],
+    "faucets": [],
+    "nativeCurrency": {
+      "name": "MathChain",
+      "symbol": "MATH",
+      "decimals": 18
+    },
+    "infoURL": "https://mathwallet.org/",
+    "shortName": "tMATH",
+    "chainId": 1140,
+    "networkId": 1140
+  }
\ No newline at end of file