diff --git a/e2e_test/js-tests/test_ethers_tx.mjs b/e2e_test/js-tests/test_ethers_tx.mjs
index 3faf2d9cdf..979150af9f 100644
--- a/e2e_test/js-tests/test_ethers_tx.mjs
+++ b/e2e_test/js-tests/test_ethers_tx.mjs
@@ -12,7 +12,7 @@ describe("ethers.js send tx", () => {
 			value: 1,
 		});
 		const receipt = await tx.wait();
-	}).timeout(10_000);
+	}).timeout(20_000);
 });
 
 describe("ethers.js compatibility tests with state", () => {
@@ -32,7 +32,7 @@ describe("ethers.js compatibility tests with state", () => {
 		assert.notEqual(feeData.maxFeePerGas, null);
 		assert.notEqual(feeData.maxPriorityFeePerGas, null);
 		assert.notEqual(feeData.gasPrice, null);
-	});
+	}).timeout(5_000);;
 
 	it("block has gasLimit", async () => {
 		const fullBlock = await provider.send("eth_getBlockByNumber", [
diff --git a/e2e_test/js-tests/test_viem_tx.mjs b/e2e_test/js-tests/test_viem_tx.mjs
index a15dd8cf1b..e42c7ba793 100644
--- a/e2e_test/js-tests/test_viem_tx.mjs
+++ b/e2e_test/js-tests/test_viem_tx.mjs
@@ -21,7 +21,6 @@ const testNonceBump = async (
 	shouldReplace,
 ) => {
 	const syncBarrierRequest = await walletClient.prepareTransactionRequest({
-
 		to: "0x00000000000000000000000000000000DeaDBeef",
 		value: 2,
 		gas: 22000,
@@ -189,15 +188,22 @@ describe("viem send tx", () => {
 		assert.equal(receipt.status, "success", "receipt status 'failure'");
 	}).timeout(10_000);
 
-	it.skip("send overlapping nonce tx in different currencies", async () => {
-		const priceBump = 1.1;
+	// The goal is this test is to ensure that fee currencies are correctly
+	// taken into account when performing tx replacements. As such we want the
+	// prices that we use for the failed and successful tx replacements to be
+	// close to the threshold value, such that an invalid currency conversion is
+	// more liable to result in a failure.
+	it("send overlapping nonce tx in different currencies", async () => {
+		// Note the threshold for a price bump to be accepted is 10%, i.e >= oldPrice * 1.1
+		const priceBump = 1.1; // minimum bump percentage to replace a transaction
+		const priceNearBump = 1.09; // slightly lower percentage than the price bump
 
 		const rate = await getRate(process.env.FEE_CURRENCY);
 		// Native to FEE_CURRENCY
 		const nativeCap = 30_000_000_000;
 		const bumpCurrencyCap = rate.toFeeCurrency(BigInt(Math.round(nativeCap * priceBump)));
 		const failToBumpCurrencyCap = rate.toFeeCurrency(BigInt(
-			Math.round(nativeCap * priceBump) - 1,
+			Math.round(nativeCap * priceNearBump)
 		));
 		const tokenCurrency = process.env.FEE_CURRENCY;
 		const nativeCurrency = null;
@@ -220,7 +226,7 @@ describe("viem send tx", () => {
 		const currencyCap = 60_000_000_000;
 		const bumpNativeCap = rate.toNative(BigInt(Math.round(currencyCap * priceBump)));
 		const failToBumpNativeCap = rate.toNative(BigInt(
-			Math.round(currencyCap * priceBump) - 1,
+			Math.round(currencyCap * priceNearBump)
 		));
 		await testNonceBump(
 			currencyCap,
@@ -236,7 +242,7 @@ describe("viem send tx", () => {
 			nativeCurrency,
 			false,
 		);
-	}).timeout(40_000);
+	}).timeout(60_000);
 
 	it("send tx with unregistered fee currency", async () => {
 		const request = await walletClient.prepareTransactionRequest({
@@ -263,7 +269,7 @@ describe("viem send tx", () => {
 		}
 	}).timeout(10_000);
 
-	it.skip("send fee currency tx with just high enough gas price", async () => {
+	it("send fee currency tx with just high enough gas price", async () => {
 		// The idea of this test is to check that the fee currency is taken into
 		// account by the server. We do this by using a fee currency that has a
 		// value greater than celo, so that the base fee in fee currency becomes a
@@ -302,8 +308,8 @@ describe("viem send tx", () => {
 		});
 		const receipt = await publicClient.waitForTransactionReceipt({ hash });
 		assert.equal(receipt.status, "success", "receipt status 'failure'");
-		assert.isAtMost(receipt.effectiveGasPrice, maxFeePerGas, "effective gas price is too high");
-		assert.isAbove(receipt.effectiveGasPrice, Number(maxFeePerGas) * 0.7, "effective gas price is too low");
+		assert.isAtMost(Number(receipt.effectiveGasPrice), Number(maxFeePerGas), "effective gas price is too high");
+		assert.isAbove(Number(receipt.effectiveGasPrice), Number(maxFeePerGas) * 0.7, "effective gas price is too low");
 	}).timeout(10_000);
 });