diff --git a/contract_manager/src/core/chains.ts b/contract_manager/src/core/chains.ts
index 1d4a26c577..ed02185ce8 100644
--- a/contract_manager/src/core/chains.ts
+++ b/contract_manager/src/core/chains.ts
@@ -1519,6 +1519,7 @@ export class TonChain extends Chain {
     wormholeChainName: string,
     nativeToken: TokenId | undefined,
     private rpcUrl: string,
+    private networkId: string,
   ) {
     super(id, mainnet, wormholeChainName, nativeToken);
   }
@@ -1583,6 +1584,7 @@ export class TonChain extends Chain {
     return {
       id: this.id,
       mainnet: this.mainnet,
+      networkId: this.networkId,
       rpcUrl: this.rpcUrl,
       type: TonChain.type,
       wormholeChainName: this.wormholeChainName,
@@ -1597,6 +1599,7 @@ export class TonChain extends Chain {
       parsed.wormholeChainName ?? "",
       parsed.nativeToken,
       parsed.rpcUrl ?? "",
+      parsed.networkId ?? "",
     );
   }
 
diff --git a/contract_manager/src/store/chains/TonChains.json b/contract_manager/src/store/chains/TonChains.json
index c850610cee..af94c72898 100644
--- a/contract_manager/src/store/chains/TonChains.json
+++ b/contract_manager/src/store/chains/TonChains.json
@@ -2,6 +2,7 @@
   {
     "id": "ton_testnet",
     "mainnet": false,
+    "networkId": "0x2",
     "rpcUrl": "https://testnet.toncenter.com/api/v2/jsonRPC#$ENV_TON_TESTNET_API_KEY",
     "type": "TonChain",
     "wormholeChainName": "ton_testnet"
@@ -9,6 +10,7 @@
   {
     "id": "ton_mainnet",
     "mainnet": true,
+    "networkId": "0x27",
     "rpcUrl": "https://toncenter.com/api/v2/jsonRPC#$ENV_TON_MAINNET_API_KEY",
     "type": "TonChain",
     "wormholeChainName": "ton_mainnet"