diff --git a/packages/arb-token-bridge-ui/package.json b/packages/arb-token-bridge-ui/package.json
index 98a4ee6d54..08399b1697 100644
--- a/packages/arb-token-bridge-ui/package.json
+++ b/packages/arb-token-bridge-ui/package.json
@@ -58,7 +58,7 @@
   "scripts": {
     "predev": "yarn generateDenylist",
     "dev": "next dev",
-    "prebuild": "yarn generateDenylist",
+    "prebuild": "yarn generateDenylist && yarn generateChainIdsEnum",
     "postinstall": "patch-package",
     "build": "next build",
     "start": "next start",
@@ -68,6 +68,7 @@
     "lint:fix": "tsc && eslint --quiet --fix",
     "prettier:format": "prettier --config-precedence file-override --write \"src/**/*.{tsx,ts,scss,md,json}\"",
     "generateDenylist": "ts-node --project ./scripts/tsconfig.json ./scripts/generateDenylist.ts",
+    "generateChainIdsEnum": "ts-node --project ./scripts/tsconfig.json ./scripts/generateChainIdsEnum.ts",
     "generateOpenGraphImages": "ts-node --project ./scripts/tsconfig.json ./src/generateOpenGraphImages.tsx generate",
     "generateOpenGraphImages:core": "yarn generateOpenGraphImages --core",
     "generateOpenGraphImages:orbit": "yarn generateOpenGraphImages --orbit",
diff --git a/packages/arb-token-bridge-ui/scripts/generateChainIdsEnum.ts b/packages/arb-token-bridge-ui/scripts/generateChainIdsEnum.ts
new file mode 100644
index 0000000000..6242984c43
--- /dev/null
+++ b/packages/arb-token-bridge-ui/scripts/generateChainIdsEnum.ts
@@ -0,0 +1,78 @@
+import fs from 'fs'
+import path from 'path'
+
+interface OrbitChainData {
+  chainId: number
+  name: string
+  isTestnet: boolean
+}
+
+interface OrbitChainsData {
+  mainnet: OrbitChainData[]
+  testnet: OrbitChainData[]
+}
+
+function toCamelCase(str: string): string {
+  return str
+    .replace(/[^a-zA-Z0-9]/g, ' ')
+    .split(' ')
+    .filter(word => word.length > 0)
+    .map((word, index) => {
+      if (index === 0) {
+        return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
+      }
+      return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
+    })
+    .join('')
+}
+
+function generateChainIdsEnum(): void {
+  const orbitChainsDataPath = path.join(__dirname, '../src/util/orbitChainsData.json')
+  const chainIdTypesPath = path.join(__dirname, '../src/types/ChainId.ts')
+  
+  const orbitChainsData: OrbitChainsData = JSON.parse(
+    fs.readFileSync(orbitChainsDataPath, 'utf8')
+  )
+  
+  const defaultChains = `  // L1
+  Ethereum = 1,
+  // L1 Testnets
+  Local = 1337,
+  Sepolia = 11155111,
+  // L2
+  ArbitrumOne = 42161,
+  ArbitrumNova = 42170,
+  Base = 8453,
+  // L2 Testnets
+  ArbitrumSepolia = 421614,
+  ArbitrumLocal = 412346,
+  BaseSepolia = 84532,
+  // L3 Testnets
+  L3Local = 333333,`
+  
+  const allChains = [...orbitChainsData.mainnet, ...orbitChainsData.testnet]
+  
+  const orbitChainEntries = allChains.map(chain => {
+    const enumKey = toCamelCase(chain.name)
+    return `  ${enumKey} = ${chain.chainId},`
+  }).join('\n')
+  
+  const newEnumContent = `export enum ChainId {
+${defaultChains}
+  // Orbit Chains
+${orbitChainEntries}
+}`
+  
+  const newContent = newEnumContent
+  
+  fs.writeFileSync(chainIdTypesPath, newContent)
+  
+  console.log('✅ ChainId enum updated with orbit chain IDs')
+  console.log(`Added ${allChains.length} orbit chains to the enum`)
+}
+
+if (require.main === module) {
+  generateChainIdsEnum()
+}
+
+export default generateChainIdsEnum
\ No newline at end of file
diff --git a/packages/arb-token-bridge-ui/src/types/ChainId.ts b/packages/arb-token-bridge-ui/src/types/ChainId.ts
index 63f189f2c9..82ceb0e89e 100644
--- a/packages/arb-token-bridge-ui/src/types/ChainId.ts
+++ b/packages/arb-token-bridge-ui/src/types/ChainId.ts
@@ -13,5 +13,65 @@ export enum ChainId {
   ArbitrumLocal = 412346,
   BaseSepolia = 84532,
   // L3 Testnets
-  L3Local = 333333
-}
+  L3Local = 333333,
+  // Orbit Chains
+  Xai = 660279,
+  RariMainnet = 1380012617,
+  Muster = 4078,
+  ProofOfPlayApex = 70700,
+  ProofOfPlayBoss = 70701,
+  Xchain = 94524,
+  Sanko = 1996,
+  Superposition = 55244,
+  MindNetwork = 228,
+  Sx = 4162,
+  Apechain = 33139,
+  GravityAlpha = 1625,
+  SpotlightMainnet = 10058111,
+  EduChain = 41923,
+  Cheesechain = 383353,
+  PlumeLegacy = 98865,
+  AlephZeroEvm = 41455,
+  ReAl = 111188,
+  UniteMainnet = 88899,
+  DataLakeMainnet = 140,
+  Chainbounty = 51828,
+  Conwai = 668668,
+  MiracleChain = 92278,
+  Birdlayer = 53456,
+  PlumeMainnet = 98866,
+  Hychain = 2911,
+  HumanityMainnet = 6985385,
+  GalacticaMainnet = 613419,
+  EarnmMainnet = 32766,
+  TRex = 1628,
+  Rcade = 101069,
+  Molten = 360,
+  Meerchain = 98215,
+  HppMainnet = 190415,
+  XaiTestnet = 37714555429,
+  DodochainTestnet = 53457,
+  RariTestnet = 1918988905,
+  XrSepolia = 2730,
+  SpotlightSepolia = 10058112,
+  SxToronto = 79479957,
+  XmtpSepolia = 241320161,
+  UniteTestnet = 888991,
+  PlumeDevnetLegacy = 98864,
+  StandardTestnet = 2426,
+  PivotalTestnet = 9116,
+  HumanityTestnet = 7080969,
+  XProtocolSepolia = 83868,
+  PlumeTestnet = 98867,
+  OpenlootSepolia = 905905,
+  AlterscopeSepolia = 2022091,
+  EarnmSepolia = 132766,
+  TRexTestnet = 1962,
+  WylerchainSepolia = 1712,
+  WorldmobileTestnet = 323432,
+  GalacticaCassiopeiaTestnet = 843843,
+  HppSepolia = 181228,
+  NexusDevnet = 393,
+  NexusTestnetIii = 3940,
+  JasmyChainTestnet = 681,
+}
\ No newline at end of file