diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 11d1c0815..d9af8a58b 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -183,7 +183,7 @@ jobs:
       - name: Set up the local node
         uses: OffchainLabs/actions/run-nitro-test-node@main
         with:
-          nitro-testnode-ref: f5a54d679733c65b81d5106488feb957ec579a46
+          nitro-testnode-ref: release
           l3-node: ${{ matrix.orbit-test == '1' }}
           args: ${{ matrix.decimals == 16 && '--l3-fee-token --l3-fee-token-decimals 16' || matrix.decimals == 20 && '--l3-fee-token --l3-fee-token-decimals 20' || matrix.decimals == 18 && '--l3-fee-token' || '' }}
 
diff --git a/packages/sdk/scripts/genNetwork.ts b/packages/sdk/scripts/genNetwork.ts
index be6b4270b..60ba2c76f 100644
--- a/packages/sdk/scripts/genNetwork.ts
+++ b/packages/sdk/scripts/genNetwork.ts
@@ -1,14 +1,7 @@
 import { loadEnv } from '../src/lib/utils/env'
 import { execSync } from 'child_process'
 import * as fs from 'fs'
-
-import { IERC20Bridge__factory } from '../src/lib/abi/factories/IERC20Bridge__factory'
-import { ethers } from 'ethers'
-import {
-  L2Network,
-  ArbitrumNetwork,
-  mapL2NetworkToArbitrumNetwork,
-} from '../src/lib/dataEntities/networks'
+import { ArbitrumNetwork, L2Network } from '../src'
 
 loadEnv()
 
@@ -35,66 +28,30 @@ function getLocalNetworksFromContainer(which: 'l1l2' | 'l2l3'): any {
   throw new Error('nitro-testnode sequencer not found')
 }
 
-/**
- * the container's files are written by the token bridge deployment step of the test node, which runs a script in token-bridge-contracts.
- * once the script in token-bridge-contracts repo uses an sdk version with the same types and is updated to populate those fields,
- * we can remove this patchwork
- */
-async function patchNetworks(
-  l2Network: L2Network,
-  l3Network: L2Network | undefined,
-  l2Provider: ethers.providers.Provider | undefined
-): Promise<{
-  patchedL2Network: ArbitrumNetwork
-  patchedL3Network?: ArbitrumNetwork
-}> {
-  const patchedL2Network = mapL2NetworkToArbitrumNetwork(l2Network)
-
-  // native token for l3
-  if (l3Network && l2Provider) {
-    const patchedL3Network = mapL2NetworkToArbitrumNetwork(l3Network)
-
-    try {
-      patchedL3Network.nativeToken = await IERC20Bridge__factory.connect(
-        l3Network.ethBridge.bridge,
-        l2Provider
-      ).nativeToken()
-    } catch (e) {
-      // l3 network doesn't have a native token
-    }
-
-    return { patchedL2Network, patchedL3Network }
-  }
-
-  return { patchedL2Network }
+function isLegacyNetworkType(
+  network: L2Network | ArbitrumNetwork
+): network is L2Network {
+  return 'partnerChainID' in network
 }
 
 async function main() {
   fs.rmSync('localNetwork.json', { force: true })
 
-  let output = getLocalNetworksFromContainer('l1l2')
+  const output = getLocalNetworksFromContainer('l1l2')
 
   if (isTestingOrbitChains) {
     // When running with L3 active, the container calls the L3 network L2 so we rename it here
     const { l2Network: l3Network } = getLocalNetworksFromContainer('l2l3')
-    const { patchedL2Network, patchedL3Network } = await patchNetworks(
-      output.l2Network,
-      l3Network,
-      new ethers.providers.JsonRpcProvider(process.env['ARB_URL'])
-    )
+    output.l3Network = l3Network
+  }
 
-    output = {
-      l2Network: patchedL2Network,
-      l3Network: patchedL3Network,
-    }
-  } else {
-    const { patchedL2Network } = await patchNetworks(
-      output.l2Network,
-      undefined,
-      undefined
+  if (
+    isLegacyNetworkType(output.l2Network) ||
+    (output.l3Network && isLegacyNetworkType(output.l3Network))
+  ) {
+    throw new Error(
+      'Legacy L2Network type detected. Please use the latest testnode version and token-bridge-contracts version 1.2.5 or above.'
     )
-
-    output.l2Network = patchedL2Network
   }
 
   fs.writeFileSync('localNetwork.json', JSON.stringify(output, null, 2))
diff --git a/packages/sdk/tests/integration/standarderc20.test.ts b/packages/sdk/tests/integration/standarderc20.test.ts
index c691c4463..67d85f0d8 100644
--- a/packages/sdk/tests/integration/standarderc20.test.ts
+++ b/packages/sdk/tests/integration/standarderc20.test.ts
@@ -257,7 +257,7 @@ describe('standard ERC20', () => {
 
     // force the redeem to fail by submitted just a bit under the required gas
     // so it is enough to pay for L1 + L2 intrinsic gas costs
-    await redeemAndTest(waitRes.message, 0, gasComponents.gasEstimate.sub(3000))
+    await redeemAndTest(waitRes.message, 0, gasComponents.gasEstimate.sub(9000))
     await redeemAndTest(waitRes.message, 1)
   })