diff --git a/package.json b/package.json
index 75f87e5..661c045 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     ]
   },
   "dependencies": {
-    "@lifi/types": "18.2.0"
+    "@lifi/types": "18.4.0"
   },
   "devDependencies": {
     "@commitlint/cli": "^19.7.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 7aac009..e850346 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -9,8 +9,8 @@ importers:
   .:
     dependencies:
       '@lifi/types':
-        specifier: 18.2.0
-        version: 18.2.0
+        specifier: 18.4.0
+        version: 18.4.0
     devDependencies:
       '@commitlint/cli':
         specifier: ^19.7.1
@@ -440,8 +440,8 @@ packages:
   '@jridgewell/trace-mapping@0.3.31':
     resolution: {integrity: sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==}
 
-  '@lifi/types@18.2.0':
-    resolution: {integrity: sha512-ap0p93xeLAMAnSQfGaeV6Gb2SLcgmyUOXav9w7fBHIcDK87Oio+On7WF4syknpwBd/JfbTV/gpH+Yfs2biQJcA==}
+  '@lifi/types@18.4.0':
+    resolution: {integrity: sha512-H0c2fwrS7fyPLVzEf8UydZ1rfNXCxW7TGfsqf0goGH2BiLIkcBAVIpiCzuIB+YBgKCwZ53wIvgBa+6AZe7Y5PQ==}
 
   '@mysten/bcs@1.9.2':
     resolution: {integrity: sha512-kBk5xrxV9OWR7i+JhL/plQrgQ2/KJhB2pB5gj+w6GXhbMQwS3DPpOvi/zN0Tj84jwPvHMllpEl0QHj6ywN7/eQ==}
@@ -3141,7 +3141,7 @@ snapshots:
       '@jridgewell/resolve-uri': 3.1.2
       '@jridgewell/sourcemap-codec': 1.5.5
 
-  '@lifi/types@18.2.0': {}
+  '@lifi/types@18.4.0': {}
 
   '@mysten/bcs@1.9.2':
     dependencies:
diff --git a/src/chains/foundry.ts b/src/chains/foundry.ts
index 99580ba..b4abd9c 100644
--- a/src/chains/foundry.ts
+++ b/src/chains/foundry.ts
@@ -82,6 +82,7 @@ export const foundryChainNameMap: Record<ChainId, string> = {
   [ChainId.OPST]: 'optimismsepolia',
   [ChainId.BAST]: 'basesepolia',
   [ChainId.ARBS]: 'arbitrumsepolia',
+  [ChainId.ETHS]: 'sepolia',
 
   // Custom chains
   [7777777 as ChainId]: 'zora',
diff --git a/src/chains/supportedChains.evm.ts b/src/chains/supportedChains.evm.ts
index aa71564..990e74d 100644
--- a/src/chains/supportedChains.evm.ts
+++ b/src/chains/supportedChains.evm.ts
@@ -1998,6 +1998,31 @@ export const supportedEVMChains: EVMChain[] = [
     },
   },
 
+  // 11155111 - Ethereum Sepolia Testnet
+  {
+    key: ChainKey.ETHS,
+    chainType: ChainType.EVM,
+    name: 'Ethereum Sepolia Testnet',
+    coin: CoinKey.ETH,
+    id: ChainId.ETHS,
+    mainnet: false,
+    logoURI:
+      'https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/chains/ethereum.svg',
+    relayerSupported: false,
+    multicallAddress: multicallAddresses[ChainId.ETHS],
+    metamask: {
+      chainId: prefixChainId(ChainId.ETHS),
+      blockExplorerUrls: ['https://sepolia.etherscan.io'],
+      chainName: 'Ethereum Sepolia Testnet',
+      nativeCurrency: {
+        name: 'Ether',
+        symbol: 'ETH',
+        decimals: 18,
+      },
+      rpcUrls: ['https://ethereum-sepolia-rpc.publicnode.com'],
+    },
+  },
+
   // 5031 - Somnia
   {
     key: ChainKey.SOM,
diff --git a/src/coins/coins.ts b/src/coins/coins.ts
index 37da14a..8d09816 100644
--- a/src/coins/coins.ts
+++ b/src/coins/coins.ts
@@ -195,6 +195,10 @@ export const basicCoins: BasicCoin[] = [
         address: '0x0000000000000000000000000000000000000000',
         decimals: 18,
       },
+      [ChainId.ETHS]: {
+        address: '0x0000000000000000000000000000000000000000',
+        decimals: 18,
+      },
       [ChainId.LTR]: {
         address: '0x0000000000000000000000000000000000000000',
         decimals: 18,
@@ -1144,6 +1148,10 @@ export const basicCoins: BasicCoin[] = [
         address: '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
         decimals: 6,
       },
+      [ChainId.ETHS]: {
+        address: '0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238',
+        decimals: 6,
+      },
       [ChainId.PHR]: {
         address: '0xc879c018db60520f4355c26ed1a6d572cdac1815',
         decimals: 6,
@@ -4547,8 +4555,8 @@ export const wrappedTokens: { [ChainId: string]: StaticToken } = {
       'https://static.debank.com/image/uni_token/logo_url/uni/48bfb74adddd170e936578aec422836d.png',
   },
   [ChainId.ARBS]: {
-    // https://sepolia.arbiscan.io/token/0x2836ae2ea2c013acd38028fd0c77b92cccfa2ee4
-    address: '0x2836ae2ea2c013acd38028fd0c77b92cccfa2ee4',
+    // https://sepolia.arbiscan.io/token/0x980b62da83eff3d4576c647993b0c1d7faf17c73
+    address: '0x980B62Da83eFf3D4576C647993b0c1D7faf17c73',
     symbol: 'WETH',
     decimals: 18,
     chainId: ChainId.ARBS,
@@ -4557,6 +4565,17 @@ export const wrappedTokens: { [ChainId: string]: StaticToken } = {
     logoURI:
       'https://static.debank.com/image/uni_token/logo_url/uni/48bfb74adddd170e936578aec422836d.png',
   },
+  [ChainId.ETHS]: {
+    // https://sepolia.etherscan.io/token/0xfff9976782d46cc05630d1f6ebab18b2324d6b14
+    address: '0xfFf9976782d46CC05630D1f6eBAb18b2324d6B14',
+    symbol: 'WETH',
+    decimals: 18,
+    chainId: ChainId.ETHS,
+    coinKey: CoinKey.WETH,
+    name: 'Wrapped Ether',
+    logoURI:
+      'https://static.debank.com/image/uni_token/logo_url/uni/48bfb74adddd170e936578aec422836d.png',
+  },
   [ChainId.OUT]: {
     address: '0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73',
     symbol: 'WETH',
diff --git a/src/multicall.ts b/src/multicall.ts
index 972c118..5054945 100644
--- a/src/multicall.ts
+++ b/src/multicall.ts
@@ -89,6 +89,7 @@ export const multicallAddresses: { [ChainId: number]: string } = {
   [ChainId.OPST]: '0xcA11bde05977b3631167028862bE2a173976CA11',
   [ChainId.BAST]: '0xcA11bde05977b3631167028862bE2a173976CA11',
   [ChainId.ARBS]: '0xcA11bde05977b3631167028862bE2a173976CA11',
+  [ChainId.ETHS]: '0xcA11bde05977b3631167028862bE2a173976CA11',
 
   // TODO
   // [ChainId.EXP]: '', // TODO