diff --git a/packages/delegation-deployments/CHANGELOG.md b/packages/delegation-deployments/CHANGELOG.md
index 2c004564..7d33dc22 100644
--- a/packages/delegation-deployments/CHANGELOG.md
+++ b/packages/delegation-deployments/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add chain deployment for Arc Mainnet ([#304](https://github.com/MetaMask/smart-accounts-kit/pull/304))
+
 ## [2.0.0]
 
 ### Added
diff --git a/packages/delegation-deployments/script/validate-contract-deployments.ts b/packages/delegation-deployments/script/validate-contract-deployments.ts
index 2690ca0b..057c29d4 100644
--- a/packages/delegation-deployments/script/validate-contract-deployments.ts
+++ b/packages/delegation-deployments/script/validate-contract-deployments.ts
@@ -389,6 +389,21 @@ const celoSepoliaChain: Chain = {
   },
 };
 
+const arcMainnetChain: Chain = {
+  id: 5042,
+  name: 'Arc Mainnet',
+  rpcUrls: {
+    default: {
+      http: ['https://rpc.mainnet.arc.io'],
+    },
+  },
+  nativeCurrency: {
+    name: 'USDC',
+    symbol: 'USDC',
+    decimals: 18,
+  },
+};
+
 const arcTestnetChain: Chain = {
   id: 5042002,
   name: 'Arc Testnet',
@@ -432,6 +447,7 @@ export const chains = {
   robinhoodMainnet: robinhoodMainnetChain,
   robinhoodTestnet: robinhoodTestnetChain,
   celoSepolia: celoSepoliaChain,
+  arcMainnet: arcMainnetChain,
 } as any as { [key: string]: Chain };
 
 // The default rpc urls for these chains are not reliable, so we override them
diff --git a/packages/delegation-deployments/src/index.ts b/packages/delegation-deployments/src/index.ts
index 20d495b9..5bca1b15 100644
--- a/packages/delegation-deployments/src/index.ts
+++ b/packages/delegation-deployments/src/index.ts
@@ -32,6 +32,7 @@ export const CHAIN_ID = {
   katanaMainnet: 0xb67d2,
   intuitionMainnet: 0x483,
   robinhoodMainnet: 0x1237,
+  arcMainnet: 0x13b2,
   // Testnets
   bscTestnet: 0x61,
   arbitrumSepolia: 0x66eee,
@@ -126,6 +127,7 @@ export const DELEGATOR_CONTRACTS: DeployedContracts = {
     [CHAIN_ID.katanaMainnet]: DEPLOYMENTS_1_3_0,
     [CHAIN_ID.intuitionMainnet]: DEPLOYMENTS_1_3_0,
     [CHAIN_ID.robinhoodMainnet]: DEPLOYMENTS_1_3_0,
+    [CHAIN_ID.arcMainnet]: DEPLOYMENTS_1_3_0,
     // Testnets
     [CHAIN_ID.bscTestnet]: DEPLOYMENTS_1_3_0,
     [CHAIN_ID.citreaTestnet]: DEPLOYMENTS_1_3_0,