diff --git a/modules/sdk-core/src/bitgo/environments.ts b/modules/sdk-core/src/bitgo/environments.ts
index e083cf3623..2867e6bddb 100644
--- a/modules/sdk-core/src/bitgo/environments.ts
+++ b/modules/sdk-core/src/bitgo/environments.ts
@@ -227,7 +227,7 @@ const mainnetBase: EnvironmentTemplate = {
   },
   icpNodeUrl: 'https://ic0.app',
   worldExplorerBaseUrl: 'https://worldscan.org/',
-  somniaExplorerBaseUrl: 'https://shannon-explorer.somnia.network/', //TODO: WIN-5278: change it with mainnet explorer, when its available
+  somniaExplorerBaseUrl: 'https://mainnet.somnia.w3us.site/',
   soneiumExplorerBaseUrl: 'https://soneium-minato.blockscout.com',
   monExplorerBaseUrl: 'https://mainnet-beta.monvision.io',
   stxNodeUrl: 'https://api.hiro.so',
diff --git a/modules/statics/src/networks.ts b/modules/statics/src/networks.ts
index 186a1b3e20..374e827941 100644
--- a/modules/statics/src/networks.ts
+++ b/modules/statics/src/networks.ts
@@ -1516,9 +1516,9 @@ class SeiEvmTestnet extends Testnet implements EthereumNetwork {
 class Somnia extends Mainnet implements EthereumNetwork {
   name = 'Somnia';
   family = CoinFamily.STT;
-  explorerUrl = 'https://shannon-explorer.somnia.network/tx/'; //TODO: WIN-5278: change it with mainnet explorer, when its available
-  chainId = 50312; //TODO: WIN-5278: change it with mainnet explorer, when its available
-  nativeCoinOperationHashPrefix = '50312'; //TODO: WIN-5278: change it with mainnet explorer, when its available
+  explorerUrl = 'https://mainnet.somnia.w3us.site/tx/';
+  chainId = 5031;
+  nativeCoinOperationHashPrefix = '5031';
 }
 
 class SomniaTestnet extends Testnet implements EthereumNetwork {