diff --git a/.github/workflows/prepare-migration.yaml b/.github/workflows/prepare-migration.yaml
index 8bb619662..938fc2537 100644
--- a/.github/workflows/prepare-migration.yaml
+++ b/.github/workflows/prepare-migration.yaml
@@ -14,6 +14,7 @@ on:
           - base
           - optimism
           - mantle
+          - scroll
       deployment:
         description: Deployment Name (e.g. "usdc")
         required: true
diff --git a/.github/workflows/run-scenarios.yaml b/.github/workflows/run-scenarios.yaml
index cf4575205..3b4e5131b 100644
--- a/.github/workflows/run-scenarios.yaml
+++ b/.github/workflows/run-scenarios.yaml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        bases: [ development, mainnet, mainnet-weth, mainnet-usdt, mainnet-wsteth, mainnet-usds, sepolia-usdc, sepolia-weth, fuji, polygon, polygon-usdt, arbitrum-usdc.e, arbitrum-usdc, arbitrum-weth, arbitrum-usdt, base-usdbc, base-weth, base-usdc, base-aero, base-usds, optimism-usdc, optimism-usdt, optimism-weth, mantle-usde, scroll-usdc]
+        bases: [ development, mainnet, mainnet-weth, mainnet-usdt, mainnet-wsteth, mainnet-usds, sepolia-usdc, sepolia-weth, fuji, polygon, polygon-usdt, arbitrum-usdc.e, arbitrum-usdc, arbitrum-weth, arbitrum-usdt, base-usdbc, base-weth, base-usdc, base-aero, optimism-usdc, optimism-usdt, optimism-weth, mantle-usde, scroll-usdc]
     name: Run scenarios
     env:
       ETHERSCAN_KEY: ${{ secrets.ETHERSCAN_KEY }}
diff --git a/deployments/mainnet/usdc/relations.ts b/deployments/mainnet/usdc/relations.ts
index 2387c8daa..7efab0f0c 100644
--- a/deployments/mainnet/usdc/relations.ts
+++ b/deployments/mainnet/usdc/relations.ts
@@ -92,5 +92,12 @@ export default {
         slot: '0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc'
       }
     }
-  }
+  },
+  baseL1USDSBridge: {
+    delegates: {
+      field: {
+        slot: '0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc'
+      }
+    }
+  },
 };
diff --git a/deployments/mainnet/usdc/roots.json b/deployments/mainnet/usdc/roots.json
index de52796a2..bad5faa50 100644
--- a/deployments/mainnet/usdc/roots.json
+++ b/deployments/mainnet/usdc/roots.json
@@ -11,6 +11,7 @@
     "CCTPMessageTransmitter": "0x0a992d191deec32afe36203ad87d7d289a738f81",
     "baseL1CrossDomainMessenger": "0x866E82a600A1414e583f7F13623F1aC5d58b0Afa",
     "baseL1StandardBridge": "0x3154Cf16ccdb4C6d922629664174b904d80F2C35",
+    "baseL1USDSBridge": "0xA5874756416Fa632257eEA380CAbd2E87cED352A",
     "opL1CrossDomainMessenger": "0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1",
     "opL1StandardBridge": "0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1",
     "mantleL1CrossDomainMessenger": "0x676A795fe6E43C17c668de16730c3F690FEB7120",
diff --git a/scenario/SupplyScenario.ts b/scenario/SupplyScenario.ts
index e12d04a31..04ef7d31c 100644
--- a/scenario/SupplyScenario.ts
+++ b/scenario/SupplyScenario.ts
@@ -510,6 +510,7 @@ scenario(
         symbol === 'wstETH' ? /0xc2139725/ : /.^/,
         symbol === 'WMATIC' ? /Transaction reverted without a reason string/ : /.^/,
         symbol === 'WPOL' ? /Transaction reverted without a reason string/ : /.^/,
+        symbol === 'sUSDS' ? /SUsds\/insufficient-allowance/ : /.^/,
       ]
     );
   }
@@ -597,6 +598,7 @@ scenario(
         symbol === 'wstETH' ? /0x00b284f2/ : /.^/,
         symbol === 'WMATIC' ? /Transaction reverted without a reason string/ : /.^/,
         symbol === 'WPOL' ? /Transaction reverted without a reason string/ : /.^/,
+        symbol === 'sUSDS' ? /SUsds\/insufficient-balance/ : /.^/,
       ]
     );
   }
diff --git a/scenario/utils/isBridgeProposal.ts b/scenario/utils/isBridgeProposal.ts
index bcfcb0acb..1f9860bc0 100644
--- a/scenario/utils/isBridgeProposal.ts
+++ b/scenario/utils/isBridgeProposal.ts
@@ -34,8 +34,11 @@ export async function isBridgeProposal(
       const baseL1StandardBridge = await governanceDeploymentManager.getContractOrThrow(
         'baseL1StandardBridge'
       );
-      const bridgeContracts = [baseL1CrossDomainMessenger.address, baseL1StandardBridge.address];
+      const baseL1USDSBridge = await governanceDeploymentManager.getContractOrThrow(
+        'baseL1USDSBridge'
+      );
       const targets = openProposal.targets;
+      const bridgeContracts = [baseL1CrossDomainMessenger.address, baseL1StandardBridge.address, baseL1USDSBridge.address];
       return targets.some(t => bridgeContracts.includes(t));
     }
     // case 'linea': {
diff --git a/scenario/utils/relayBaseMessage.ts b/scenario/utils/relayBaseMessage.ts
index 5f1d19ee2..42f72106c 100644
--- a/scenario/utils/relayBaseMessage.ts
+++ b/scenario/utils/relayBaseMessage.ts
@@ -4,7 +4,6 @@ import { setNextBaseFeeToZero, setNextBlockTimestamp } from './hreUtils';
 import { BigNumber, ethers } from 'ethers';
 import { Log } from '@ethersproject/abstract-provider';
 import { OpenBridgedProposal } from '../context/Gov';
-
 /*
 The Base relayer applies an offset to the message sender.
 
@@ -27,6 +26,7 @@ export default async function relayBaseMessage(
   const bridgeReceiver = await bridgeDeploymentManager.getContractOrThrow('bridgeReceiver');
   const l2CrossDomainMessenger = await bridgeDeploymentManager.getContractOrThrow('l2CrossDomainMessenger');
   const l2StandardBridge = await bridgeDeploymentManager.getContractOrThrow('l2StandardBridge');
+  const l2USDSBridge = await bridgeDeploymentManager.contract('l2USDSBridge');
 
   const openBridgedProposals: OpenBridgedProposal[] = [];
 
@@ -63,7 +63,9 @@ export default async function relayBaseMessage(
     // there are two types:
     // 1. Bridging ERC20 token or ETH
     // 2. Cross-chain message passing
-    if (target === l2StandardBridge.address) {
+    if (target === l2StandardBridge.address ||
+      (l2USDSBridge ? target === l2USDSBridge.address : target.toLowerCase() === '0xee44cdb68D618d58F75d9fe0818B640BD7B8A7B7'.toLowerCase())
+    ) {
       // Bridging ERC20 token
       const messageWithoutPrefix = message.slice(2); // strip out the 0x prefix
       const messageWithoutSigHash = '0x' + messageWithoutPrefix.slice(8);