diff --git a/crates/chains-info/fixtures/chains.json b/crates/chains-info/fixtures/chains.json
index 5fef70c9b..164586692 100644
--- a/crates/chains-info/fixtures/chains.json
+++ b/crates/chains-info/fixtures/chains.json
@@ -14035,8 +14035,8 @@
     "nativeCurrency": { "name": "Ether", "symbol": "ETH", "decimals": 18 },
     "infoURL": "https://webb.tools",
     "shortName": "athena",
-    "chainId": 5001,
-    "networkId": 5001,
+    "chainId": 3884533461,
+    "networkId": 3884533461,
     "status": "testnet",
     "explorers": [
       {
@@ -14054,8 +14054,8 @@
     "nativeCurrency": { "name": "Ether", "symbol": "ETH", "decimals": 18 },
     "infoURL": "https://webb.tools",
     "shortName": "hermes",
-    "chainId": 5002,
-    "networkId": 5002,
+    "chainId": 3884533462,
+    "networkId": 3884533462,
     "status": "testnet",
     "explorers": [
       {
@@ -14073,8 +14073,8 @@
     "nativeCurrency": { "name": "Ether", "symbol": "ETH", "decimals": 18 },
     "infoURL": "https://webb.tools",
     "shortName": "demeter",
-    "chainId": 5003,
-    "networkId": 5003,
+    "chainId": 3884533463,
+    "networkId": 3884533463,
     "status": "testnet",
     "explorers": [
       {
diff --git a/crates/chains-info/supported_chains.toml b/crates/chains-info/supported_chains.toml
index 78fc4b529..343b57983 100644
--- a/crates/chains-info/supported_chains.toml
+++ b/crates/chains-info/supported_chains.toml
@@ -12,9 +12,9 @@ chain-ids = [
     1284, # Moonbeam Mainnet
     1285, # Moonriver
     1287, # Moonbase Alpha
-    5001, # Athena Testnet
-    5002, # Hermes Testnet
-    5003, # Demeter Testnet
+    3884533461, # Athena Testnet
+    3884533462, # Hermes Testnet
+    3884533463, # Demeter Testnet
 ]
 
 # Override the coingecko coin Id for the Moonbase Alpha network