diff --git a/deploy/consts.ts b/deploy/consts.ts
index e06448466..4c6aeea97 100644
--- a/deploy/consts.ts
+++ b/deploy/consts.ts
@@ -65,6 +65,10 @@ export const L1_ADDRESS_MAP: { [key: number]: { [contractName: string]: string }
   324: {
     weth: "0x5AEa5775959fBC2557Cc8789bC1bf90A239D9a91",
   },
+  11155111: {
+    finder: "0xeF684C38F94F48775959ECf2012D7E864ffb9dd4",
+    weth: "0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9",
+  },
 };
 
 export const L2_ADDRESS_MAP: { [key: number]: { [contractName: string]: string } } = {
diff --git a/deployments/deployments.json b/deployments/deployments.json
index 06b1330bd..0678f00fb 100644
--- a/deployments/deployments.json
+++ b/deployments/deployments.json
@@ -59,5 +59,11 @@
     "SpokePool": { "address": "0x45fF03629D024b7763275e732a2d80202c18b31C", "blockNumber": 26276253 }
   },
   "421611": { "SpokePool": { "address": "0x3BED21dAe767e4Df894B31b14aD32369cE4bad8b", "blockNumber": 10523275 } },
-  "421613": { "SpokePool": { "address": "0xD29C85F15DF544bA632C9E25829fd29d767d7978", "blockNumber": 16711650 } }
+  "421613": { "SpokePool": { "address": "0xd08baaE74D6d2eAb1F3320B2E1a53eeb391ce8e5", "blockNumber": 30397192 } },
+  "11155111": {
+    "AcrossConfigStore": { "address": "0xd85630E361cEbBC4c7f13e6eEd3587050fB81B86", "blockNumber": 3890922 },
+    "LPTokenFactory": { "address": "0x28077B47Cd03326De7838926A63699849DD4fa87", "blockNumber": 3882568 },
+    "HubPool": { "address": "0x09aea4b2242abC8bb4BB78D537A67a245A7bEC64", "blockNumber": 3883048 },
+    "SpokePool": { "address": "0x3baD7AD0728f9917d1Bf08af5782dCbD516cDd96", "blockNumber": 3883174 }
+  }
 }
diff --git a/hardhat.config.ts b/hardhat.config.ts
index cd657cf05..db411a6ca 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -134,6 +134,12 @@ const config: HardhatUserConfig = {
       saveDeployments: true,
       accounts: { mnemonic },
     },
+    sepolia: {
+      url: "https://rpc2.sepolia.org",
+      accounts: { mnemonic },
+      saveDeployments: true,
+      chainId: 11155111,
+    },
     polygon: {
       chainId: 137,
       url: getNodeUrl("polygon-matic", true, 137),
@@ -162,6 +168,7 @@ const config: HardhatUserConfig = {
       kovan: process.env.ETHERSCAN_API_KEY!,
       rinkeby: process.env.ETHERSCAN_API_KEY!,
       goerli: process.env.ETHERSCAN_API_KEY!,
+      // sepolia: process.env.ETHERSCAN_API_KEY!, hardhat-etherscan is unhappy with custom definitions.
       optimisticEthereum: process.env.OPTIMISM_ETHERSCAN_API_KEY!,
       arbitrumOne: process.env.ARBITRUM_ETHERSCAN_API_KEY!,
       polygon: process.env.POLYGON_ETHERSCAN_API_KEY!,
diff --git a/package.json b/package.json
index 4602b4748..b0bb52db2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@across-protocol/contracts-v2",
-  "version": "2.3.3",
+  "version": "2.3.4",
   "author": "UMA Team",
   "license": "AGPL-3.0-only",
   "repository": {
diff --git a/utils/constants.ts b/utils/constants.ts
index 62b6b4ced..79f378106 100644
--- a/utils/constants.ts
+++ b/utils/constants.ts
@@ -5,6 +5,7 @@ export const CHAIN_IDs = {
   BOBA: 288,
   POLYGON: 137,
   GOERLI: 5,
+  SEPOLIA: 11155111,
   MUMBAI: 80001,
   ARBITRUM_GOERLI: 421613,
   OPTIMISM_GOERLI: 420,
@@ -78,7 +79,9 @@ export const TOKEN_SYMBOLS_MAP = {
       [CHAIN_IDs.POLYGON]: "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
       [CHAIN_IDs.BOBA]: "0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000",
       [CHAIN_IDs.ARBITRUM]: "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1",
+      [CHAIN_IDs.ARBITRUM_GOERLI]: "0xe39Ab88f8A4777030A534146A9Ca3B52bd5D43A3",
       [CHAIN_IDs.GOERLI]: "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6",
+      [CHAIN_IDs.SEPOLIA]: "0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9",
     },
   },
   MATIC: {
@@ -173,7 +176,9 @@ export const TOKEN_SYMBOLS_MAP = {
       [CHAIN_IDs.POLYGON]: "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
       [CHAIN_IDs.BOBA]: "0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000",
       [CHAIN_IDs.ARBITRUM]: "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1",
+      [CHAIN_IDs.ARBITRUM_GOERLI]: "0xe39Ab88f8A4777030A534146A9Ca3B52bd5D43A3",
       [CHAIN_IDs.GOERLI]: "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6",
+      [CHAIN_IDs.SEPOLIA]: "0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9",
     },
   },
   WMATIC: {