diff --git a/.github/workflows/ci-test.yaml b/.github/workflows/ci-test.yaml
index 5b4b58d..6ee4b9f 100644
--- a/.github/workflows/ci-test.yaml
+++ b/.github/workflows/ci-test.yaml
@@ -64,7 +64,10 @@ jobs:
           version: v1.5.1
 
       - name: Run ZKsync OS (L1-L2)
-        uses: dutterbutter/zksync-server-action@e0401b155b1fa0f4f3629d569db3ae7094383729 # main
+        uses: dutterbutter/zksync-server-action@54ebddef27a0bd7ef30246f94add1c9091ae23be # v0.2.0
+        with:
+          version: v0.15.1
+          protocol_version: v30.2
 
       - name: Compile test contracts
         working-directory: tests/contracts
@@ -190,7 +193,10 @@ jobs:
           version: v1.5.1
 
       - name: Run ZKsync OS (L1-L2)
-        uses: dutterbutter/zksync-server-action@e0401b155b1fa0f4f3629d569db3ae7094383729 # main
+        uses: dutterbutter/zksync-server-action@54ebddef27a0bd7ef30246f94add1c9091ae23be # v0.2.0
+        with:
+          version: v0.15.1
+          protocol_version: v30.2
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@735343b667d3e6f658f44d0eca948eb6282f2b76 # v2.0.2
diff --git a/src/adapters/ethers/e2e/helpers.ts b/src/adapters/ethers/e2e/helpers.ts
index cc65523..1ccac9d 100644
--- a/src/adapters/ethers/e2e/helpers.ts
+++ b/src/adapters/ethers/e2e/helpers.ts
@@ -20,7 +20,8 @@ import { expect } from 'bun:test';
 // TODO: make this shared across resources
 const L1_RPC_URL = 'http://127.0.0.1:8545';
 const L2_RPC_URL = 'http://127.0.0.1:3050';
-const PRIVATE_KEY = '0x2a871d0798f97d79848a013d4936a73bf4cc922c825d33c1cf7073dff6d409c6';
+const PRIVATE_KEY = '0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80';
+const L2_RICH_PRIVATE_KEY = '0x7726827caac94a7f9e1b160f7ea819f172f7b6f9d2a97f992c38edeab82d4110';
 const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
 
 export const DEPLOYER_PRIVATE_KEY =
@@ -37,6 +38,18 @@ export function createTestClientAndSdk() {
   return { client, sdk };
 }
 
+// Ensure the test signer has enough ETH on L2 for withdrawal tests.
+export async function ensureL2Balance(client: any, minBalance: bigint): Promise<void> {
+  const me = (await client.signer.getAddress()) as Address;
+  const current = (await client.l2.getBalance(me)) as bigint;
+  if (current >= minBalance) return;
+
+  const topUp = minBalance - current + 1_000_000_000_000_000n; // +0.001 ETH buffer for gas
+  const funder = new Wallet(L2_RICH_PRIVATE_KEY, client.l2);
+  const tx = await funder.sendTransaction({ to: me, value: topUp });
+  await tx.wait();
+}
+
 /** Create deployer wallets bound to current providers (same PK on both chains). */
 export function makeDeployers(l1: JsonRpcProvider, l2: JsonRpcProvider) {
   const baseL1 = new Wallet(DEPLOYER_PRIVATE_KEY, l1);
diff --git a/src/adapters/ethers/e2e/withdrawals.eth.e2e.ts b/src/adapters/ethers/e2e/withdrawals.eth.e2e.ts
index cf12d3c..4ceed54 100644
--- a/src/adapters/ethers/e2e/withdrawals.eth.e2e.ts
+++ b/src/adapters/ethers/e2e/withdrawals.eth.e2e.ts
@@ -10,6 +10,7 @@ import type { Address, Hex } from '../../../core/types/primitives.ts';
 import { ETH_ADDRESS } from '../../../core/constants.ts';
 import {
   createTestClientAndSdk,
+  ensureL2Balance,
   waitUntilReadyToFinalize,
   verifyWithdrawalBalancesAfterFinalize,
   waitForL2InclusionWithdraw,
@@ -29,6 +30,7 @@ describe('withdrawals.e2e (ethers): ETH withdrawal', () => {
   beforeAll(async () => {
     ({ client, sdk } = createTestClientAndSdk());
     me = (await client.signer.getAddress()) as Address;
+    await ensureL2Balance(client, WITHDRAW_WEI);
 
     // Ensure L2 has funds to withdraw
     const l2Bal = await client.l2.getBalance(me);
diff --git a/src/adapters/viem/e2e/helpers.ts b/src/adapters/viem/e2e/helpers.ts
index 7296ee1..91af60e 100644
--- a/src/adapters/viem/e2e/helpers.ts
+++ b/src/adapters/viem/e2e/helpers.ts
@@ -27,7 +27,8 @@ import { createViemSdk } from '../sdk.ts';
 // TODO: refactor with shared mocks
 const L1_RPC = 'http://127.0.0.1:8545';
 const L2_RPC = 'http://127.0.0.1:3050';
-const PRIVATE_KEY = '0x2a871d0798f97d79848a013d4936a73bf4cc922c825d33c1cf7073dff6d409c6';
+const PRIVATE_KEY = '0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80';
+const L2_RICH_PRIVATE_KEY = '0x7726827caac94a7f9e1b160f7ea819f172f7b6f9d2a97f992c38edeab82d4110';
 const DEPLOYER_PRIVATE_KEY = '0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80';
 const L1_CHAIN: Chain | undefined = undefined;
 const L2_CHAIN: Chain | undefined = undefined;
@@ -66,6 +67,27 @@ export function createTestClientAndSdk() {
   return { client, sdk };
 }
 
+// Ensure the test signer has enough ETH on L2 for withdrawal tests.
+export async function ensureL2Balance(client: any, minBalance: bigint): Promise<void> {
+  const me = client.account.address as Address;
+  const current = (await client.l2.getBalance({ address: me })) as bigint;
+  if (current >= minBalance) return;
+
+  const topUp = minBalance - current + 1_000_000_000_000_000n; // +0.001 ETH buffer for gas
+  const funderAccount = privateKeyToAccount(L2_RICH_PRIVATE_KEY);
+  const l2Funder = createWalletClient<Transport, Chain, Account>({
+    account: funderAccount,
+    transport: http(L2_RPC),
+    ...(L2_CHAIN ? { chain: L2_CHAIN } : {}),
+  });
+  const hash = await l2Funder.sendTransaction({
+    account: funderAccount,
+    to: me,
+    value: topUp,
+  });
+  await client.l2.waitForTransactionReceipt({ hash });
+}
+
 export function makeDeployers() {
   const deployerAccount = privateKeyToAccount(DEPLOYER_PRIVATE_KEY);
 
diff --git a/src/adapters/viem/e2e/withdrawals.eth.e2e.ts b/src/adapters/viem/e2e/withdrawals.eth.e2e.ts
index 8fd3052..3979ea4 100644
--- a/src/adapters/viem/e2e/withdrawals.eth.e2e.ts
+++ b/src/adapters/viem/e2e/withdrawals.eth.e2e.ts
@@ -10,6 +10,7 @@ import type { Address, Hex } from '../../../core/types/primitives.ts';
 import { ETH_ADDRESS } from '../../../core/constants.ts';
 import {
   createTestClientAndSdk,
+  ensureL2Balance,
   waitForL2InclusionWithdraw,
   waitUntilReadyToFinalize,
   verifyWithdrawalBalancesAfterFinalize,
@@ -28,6 +29,7 @@ describe('withdrawals.e2e (viem): ETH withdrawal', () => {
   beforeAll(async () => {
     ({ client, sdk } = createTestClientAndSdk());
     me = client.account.address as Address;
+    await ensureL2Balance(client, WITHDRAW_WEI);
 
     // Ensure L2 has funds to withdraw
     const l2Bal = await client.l2.getBalance({ address: me });