diff --git a/packages/sdk/src/interfaces/types.ts b/packages/sdk/src/interfaces/types.ts
index 04913906f818..ce6851e956ac 100644
--- a/packages/sdk/src/interfaces/types.ts
+++ b/packages/sdk/src/interfaces/types.ts
@@ -30,6 +30,7 @@ export enum L2ChainID {
   OPTIMISM_BEDROCK_LOCAL_DEVNET = 901,
   OPTIMISM_BEDROCK_ALPHA_TESTNET = 28528,
   BASE_GOERLI = 84531,
+  BASE_MAINNET = 8453,
   ZORA_GOERLI = 999,
   ZORA_MAINNET = 7777777,
 }
diff --git a/packages/sdk/src/utils/chain-constants.ts b/packages/sdk/src/utils/chain-constants.ts
index 9555c46169cc..c8853c051da2 100644
--- a/packages/sdk/src/utils/chain-constants.ts
+++ b/packages/sdk/src/utils/chain-constants.ts
@@ -72,6 +72,7 @@ export const DEPOSIT_CONFIRMATION_BLOCKS: {
   [L2ChainID.OPTIMISM_BEDROCK_LOCAL_DEVNET]: 2 as const,
   [L2ChainID.OPTIMISM_BEDROCK_ALPHA_TESTNET]: 12 as const,
   [L2ChainID.BASE_GOERLI]: 12 as const,
+  [L2ChainID.BASE_MAINNET]: 50 as const,
   [L2ChainID.ZORA_GOERLI]: 12 as const,
   [L2ChainID.ZORA_MAINNET]: 50 as const,
 }
@@ -218,6 +219,22 @@ export const CONTRACT_ADDRESSES: {
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
+  [L2ChainID.BASE_MAINNET]: {
+    l1: {
+      AddressManager: '0x8EfB6B5c4767B09Dc9AA6Af4eAA89F749522BaE2' as const,
+      L1CrossDomainMessenger:
+        '0x866E82a600A1414e583f7F13623F1aC5d58b0Afa' as const,
+      L1StandardBridge: '0x3154Cf16ccdb4C6d922629664174b904d80F2C35' as const,
+      StateCommitmentChain:
+        '0x0000000000000000000000000000000000000000' as const,
+      CanonicalTransactionChain:
+        '0x0000000000000000000000000000000000000000' as const,
+      BondManager: '0x0000000000000000000000000000000000000000' as const,
+      OptimismPortal: '0x49048044D57e1C92A77f79988d21Fa8fAF74E97e' as const,
+      L2OutputOracle: '0x56315b90c40730925ec5485cf004d835058518A0' as const,
+    },
+    l2: DEFAULT_L2_CONTRACT_ADDRESSES,
+  },
   // Zora Goerli
   [L2ChainID.ZORA_GOERLI]: {
     l1: {