diff --git a/package.json b/package.json
index 5923beb52..139b0d643 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@across-protocol/sdk-v2",
   "author": "UMA Team",
-  "version": "0.23.11",
+  "version": "0.23.12",
   "license": "AGPL-3.0",
   "homepage": "https://docs.across.to/reference/sdk",
   "files": [
@@ -99,8 +99,8 @@
   },
   "dependencies": {
     "@across-protocol/across-token": "^1.0.0",
-    "@across-protocol/constants-v2": "^1.0.20",
-    "@across-protocol/contracts-v2": "2.5.6",
+    "@across-protocol/constants-v2": "^1.0.26",
+    "@across-protocol/contracts-v2": "2.5.7",
     "@eth-optimism/sdk": "^3.2.2",
     "@pinata/sdk": "^2.1.0",
     "@types/mocha": "^10.0.1",
diff --git a/src/relayFeeCalculator/chain-queries/index.ts b/src/relayFeeCalculator/chain-queries/index.ts
index 4e581ae17..6aece9553 100644
--- a/src/relayFeeCalculator/chain-queries/index.ts
+++ b/src/relayFeeCalculator/chain-queries/index.ts
@@ -7,3 +7,4 @@ export * from "./linea";
 export * from "./optimism";
 export * from "./polygon";
 export * from "./zksync";
+export * from "./mode";
diff --git a/src/relayFeeCalculator/chain-queries/mode.ts b/src/relayFeeCalculator/chain-queries/mode.ts
new file mode 100644
index 000000000..97b3a35ec
--- /dev/null
+++ b/src/relayFeeCalculator/chain-queries/mode.ts
@@ -0,0 +1,55 @@
+import { DEFAULT_LOGGER, Logger } from "../relayFeeCalculator";
+import { providers } from "ethers";
+import {
+  DEFAULT_ARWEAVE_STORAGE_ADDRESS,
+  DEFAULT_SIMULATED_RELAYER_ADDRESS_TEST,
+  TOKEN_SYMBOLS_MAP,
+  CHAIN_IDs,
+} from "../../constants";
+import { asL2Provider } from "@eth-optimism/sdk/dist/l2-provider";
+import QueryBase from "./baseQuery";
+import { getDeployedAddress } from "../../utils/DeploymentUtils";
+
+export class ModeQueries extends QueryBase {
+  constructor(
+    provider: providers.Provider,
+    symbolMapping = TOKEN_SYMBOLS_MAP,
+    spokePoolAddress = getDeployedAddress("SpokePool", CHAIN_IDs.MODE),
+    simulatedRelayerAddress = DEFAULT_ARWEAVE_STORAGE_ADDRESS,
+    coingeckoProApiKey?: string,
+    logger: Logger = DEFAULT_LOGGER,
+    gasMarkup = 0
+  ) {
+    super(
+      asL2Provider(provider),
+      symbolMapping,
+      spokePoolAddress,
+      simulatedRelayerAddress,
+      gasMarkup,
+      logger,
+      coingeckoProApiKey
+    );
+  }
+}
+
+export class ModeSepoliaQueries extends QueryBase {
+  constructor(
+    provider: providers.Provider,
+    symbolMapping = TOKEN_SYMBOLS_MAP,
+    spokePoolAddress = getDeployedAddress("SpokePool", CHAIN_IDs.MODE_SEPOLIA),
+    simulatedRelayerAddress = DEFAULT_SIMULATED_RELAYER_ADDRESS_TEST,
+    coingeckoProApiKey?: string,
+    logger: Logger = DEFAULT_LOGGER,
+    gasMarkup = 0
+  ) {
+    super(
+      asL2Provider(provider),
+      symbolMapping,
+      spokePoolAddress,
+      simulatedRelayerAddress,
+      gasMarkup,
+      logger,
+      coingeckoProApiKey
+    );
+  }
+}
diff --git a/src/utils/BlockUtils.ts b/src/utils/BlockUtils.ts
index 09441da29..f2b889392 100644
--- a/src/utils/BlockUtils.ts
+++ b/src/utils/BlockUtils.ts
@@ -37,6 +37,7 @@ const blockTimes: { [chainId: number]: BlockTimeAverage } = {
   1: { average: 12.5, timestamp: now, blockRange: 1 },
   10: { average: 2, timestamp: now, blockRange: 1 },
   8453: { average: 2, timestamp: now, blockRange: 1 },
+  34443: { average: 2, timestamp: now, blockRange: 1 },
   59144: { average: 3, timestamp: now, blockRange: 1 },
 };
 
diff --git a/src/utils/NetworkUtils.ts b/src/utils/NetworkUtils.ts
index b5d9442ea..a0996b2dd 100644
--- a/src/utils/NetworkUtils.ts
+++ b/src/utils/NetworkUtils.ts
@@ -51,10 +51,12 @@ export function chainIsOPStack(chainId: number): boolean {
   return [
     CHAIN_IDs.OPTIMISM,
     CHAIN_IDs.BASE,
+    CHAIN_IDs.MODE,
     CHAIN_IDs.OPTIMISM_GOERLI,
     CHAIN_IDs.BASE_GOERLI,
     CHAIN_IDs.OPTIMISM_SEPOLIA,
     CHAIN_IDs.BASE_SEPOLIA,
+    CHAIN_IDs.MODE_SEPOLIA,
   ].includes(chainId);
 }
 
diff --git a/yarn.lock b/yarn.lock
index 364d405a0..6a4ebc4ae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16,22 +16,17 @@
     "@uma/common" "^2.17.0"
     hardhat "^2.9.3"
 
-"@across-protocol/constants-v2@^1.0.19":
-  version "1.0.19"
-  resolved "https://registry.yarnpkg.com/@across-protocol/constants-v2/-/constants-v2-1.0.19.tgz#398d64f590bb0ebea6c4241acac2af24af4ab4e1"
-  integrity sha512-v12qvWxuN37HLSCg+LahzGIShakR4/+l7K6GtVEIRg/dj/HTUtGzgpB4Uyx6nYkA6ffAKcxJaUK600JovNhkEA==
-
-"@across-protocol/constants-v2@^1.0.20":
-  version "1.0.20"
-  resolved "https://registry.yarnpkg.com/@across-protocol/constants-v2/-/constants-v2-1.0.20.tgz#d28fb3d3be8514db51c214d92bee954d15e5f06a"
-  integrity sha512-DYb48kaAzv7t4/FVi4a5KYGNxJSG2rOY2mSznuWDI4n4mezM1wTTtQzK3un15tcwkTlIeO13CaDeABgR6jIVvg==
+"@across-protocol/constants-v2@^1.0.26":
+  version "1.0.26"
+  resolved "https://registry.yarnpkg.com/@across-protocol/constants-v2/-/constants-v2-1.0.26.tgz#04fff84574af9fe4128318a19d7b7990ee10f32e"
+  integrity sha512-XuxBGNvhevdTT+GQGreg1YP+RsRWzuqOEHNA9m/p7l3qjFkXuWUM9nj77ttccbIi0tCZQDiMR8VxwHBCAXB4LQ==
 
-"@across-protocol/contracts-v2@2.5.6":
-  version "2.5.6"
-  resolved "https://registry.yarnpkg.com/@across-protocol/contracts-v2/-/contracts-v2-2.5.6.tgz#3734e03ca42b81e8a878e6d88a5c5ddcb5a8e9ca"
-  integrity sha512-A3bmYubISoH/KpaOKYNJ4/SF2f/VLdfo94+/9P1zNDL9bq/S/1KeKq8SU7jjPIJ9JEAqIUk5HhNgrQjYx/1ZkQ==
+"@across-protocol/contracts-v2@2.5.7":
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/@across-protocol/contracts-v2/-/contracts-v2-2.5.7.tgz#5bafbda17a4196593130c175fa6dc5d3b9d9f88d"
+  integrity sha512-MsvwUfjLiNmGHdVvTQxPHaOIt5U3bWRC99aM2cTzTw629ktH13G5PsCUgAPmPyXqm3WtyQqIOOcEuw5Sz0BAtA==
   dependencies:
-    "@across-protocol/constants-v2" "^1.0.19"
+    "@across-protocol/constants-v2" "^1.0.26"
     "@defi-wonderland/smock" "^2.3.4"
     "@eth-optimism/contracts" "^0.5.40"
     "@ethersproject/abstract-provider" "5.7.0"