diff --git a/_data/chains/eip155-57.json b/_data/chains/eip155-57.json
index 88f9a788..5716cf7c 100644
--- a/_data/chains/eip155-57.json
+++ b/_data/chains/eip155-57.json
@@ -3,9 +3,8 @@
   "chain": "SYS",
   "network": "mainnet",
   "rpc": [
-    "https://nevm.syscoin.org/api/eth-rpc",
-    "https://web3.syscoin.org",
-    "wss://web3.syscoin.org"
+    "https://rpc.syscoin.org",
+    "wss://rpc.syscoin.org/wss"
   ],
   "faucets": ["https://faucet.syscoin.org"],
   "nativeCurrency": {
diff --git a/_data/chains/eip155-5700.json b/_data/chains/eip155-5700.json
index 260daf1a..f842d3a4 100644
--- a/_data/chains/eip155-5700.json
+++ b/_data/chains/eip155-5700.json
@@ -3,7 +3,8 @@
   "chain": "SYS",
   "network": "testnet",
   "rpc": [
-    "https://tanenbaum.io/api/eth-rpc"
+    "https://rpc.tanenbaum.io",
+    "wss://rpc.tanenbaum.io/wss"
   ],
   "faucets": ["https://faucet.tanenbaum.io"],
   "nativeCurrency": {