diff --git a/go/enclave/crosschain/message_bus_manager.go b/go/enclave/crosschain/message_bus_manager.go
index b4f2548bc8..4b16e911c1 100644
--- a/go/enclave/crosschain/message_bus_manager.go
+++ b/go/enclave/crosschain/message_bus_manager.go
@@ -94,7 +94,7 @@ func (m *MessageBusManager) GenerateMessageBusDeployTx() (*common.L2Tx, error) {
 	tx := &types.LegacyTx{
 		Nonce:    0, // The first transaction of the owner identity should always be deploying the contract
 		Value:    gethcommon.Big0,
-		Gas:      500_000_000,     // It's quite the expensive contract.
+		Gas:      5_000_000,       // It's quite the expensive contract.
 		GasPrice: gethcommon.Big0, // Synthetic transactions are on the house. Or the house.
 		Data:     gethcommon.FromHex(MessageBus.MessageBusMetaData.Bin),
 		To:       nil, // Geth requires nil instead of gethcommon.Address{} which equates to zero address in order to return receipt.
diff --git a/go/enclave/system/contracts.go b/go/enclave/system/contracts.go
index a7fb17d1eb..cdfb6c2e45 100644
--- a/go/enclave/system/contracts.go
+++ b/go/enclave/system/contracts.go
@@ -15,7 +15,7 @@ func GenerateDeploymentTransaction(initCode []byte, logger gethlog.Logger) (*com
 	tx := &types.LegacyTx{
 		Nonce:    0, // The first transaction of the owner identity should always be deploying the contract
 		Value:    gethcommon.Big0,
-		Gas:      500_000_000,     // It's quite the expensive contract.
+		Gas:      10_000_000,      // It's quite the expensive contract.
 		GasPrice: gethcommon.Big0, // Synthetic transactions are on the house. Or the house.
 		Data:     initCode,        // gethcommon.FromHex(SystemDeployer.SystemDeployerMetaData.Bin),
 		To:       nil,             // Geth requires nil instead of gethcommon.Address{} which equates to zero address in order to return receipt.
diff --git a/integration/simulation/transaction_injector.go b/integration/simulation/transaction_injector.go
index 6888055def..cf200134e9 100644
--- a/integration/simulation/transaction_injector.go
+++ b/integration/simulation/transaction_injector.go
@@ -447,7 +447,7 @@ func (ti *TransactionInjector) issueRandomWithdrawals() {
 		tx := &types.LegacyTx{
 			Nonce:    fromWallet.GetNonceAndIncrement(),
 			Value:    gethcommon.Big1,
-			Gas:      uint64(1_000_000_000),
+			Gas:      uint64(1_000_000),
 			GasPrice: price,
 			Data:     nil,
 			To:       &msgBusAddr,
@@ -530,7 +530,7 @@ func (ti *TransactionInjector) newTx(data []byte, nonce uint64, ercType testcomm
 	return &types.LegacyTx{
 		Nonce:    nonce,
 		Value:    gethcommon.Big0,
-		Gas:      uint64(1_000_000_000),
+		Gas:      uint64(1_000_000),
 		GasPrice: gethcommon.Big1,
 		Data:     data,
 		To:       ti.wallets.Tokens[ercType].L2ContractAddress,
diff --git a/integration/tengateway/tengateway_test.go b/integration/tengateway/tengateway_test.go
index 322bc1b4c7..e6b4b213cd 100644
--- a/integration/tengateway/tengateway_test.go
+++ b/integration/tengateway/tengateway_test.go
@@ -263,7 +263,7 @@ func interactWithSmartContractUnsigned(client *ethclient.Client, sendRaw bool, n
 		interactionTx := types.LegacyTx{
 			Nonce:    nonce,
 			To:       &contractAddress,
-			Gas:      uint64(10_000_000),
+			Gas:      uint64(1_000_000),
 			GasPrice: result.ToInt(),
 			Data:     contractInteractionData,
 			Value:    value,
@@ -769,7 +769,7 @@ func testUnsubscribe(t *testing.T, _ int, httpURL, wsURL string, w wallet.Wallet
 	// deploy events contract
 	deployTx := &types.LegacyTx{
 		Nonce:    w.GetNonceAndIncrement(),
-		Gas:      uint64(10_000_000),
+		Gas:      uint64(1_000_000),
 		GasPrice: gethcommon.Big1,
 		Data:     gethcommon.FromHex(eventsContractBytecode),
 	}
diff --git a/tools/hardhatdeployer/contract_deployer.go b/tools/hardhatdeployer/contract_deployer.go
index 59684be16e..ab64493731 100644
--- a/tools/hardhatdeployer/contract_deployer.go
+++ b/tools/hardhatdeployer/contract_deployer.go
@@ -93,7 +93,7 @@ func (cd *contractDeployer) run() (string, error) {
 	deployContractTx := types.LegacyTx{
 		Nonce:    cd.wallet.GetNonceAndIncrement(),
 		GasPrice: big.NewInt(params.InitialBaseFee),
-		Gas:      uint64(500_000_000),
+		Gas:      uint64(1_000_000),
 		Data:     cd.contractCode,
 	}