diff --git a/sdk/src/config/MAINNET.ts b/sdk/src/config/MAINNET.ts
index cbee9f737..21593bb3f 100644
--- a/sdk/src/config/MAINNET.ts
+++ b/sdk/src/config/MAINNET.ts
@@ -219,6 +219,7 @@ const MAINNET: { [chain in MainnetChainName]: ChainConfig } = {
     },
     finalityThreshold: 0,
     nativeTokenDecimals: 18,
+    cctpDomain: 6,
   },
   sei: {
     key: 'sei',
diff --git a/sdk/src/config/TESTNET.ts b/sdk/src/config/TESTNET.ts
index d83ef3e16..8cde0d174 100644
--- a/sdk/src/config/TESTNET.ts
+++ b/sdk/src/config/TESTNET.ts
@@ -220,6 +220,7 @@ const TESTNET: { [chain in TestnetChainName]: ChainConfig } = {
     },
     finalityThreshold: 0,
     nativeTokenDecimals: 18,
+    cctpDomain: 6,
   },
   sei: {
     key: 'sei',