diff --git a/go/enclave/rpc/EstimateGas.go b/go/enclave/rpc/EstimateGas.go
index c0821c4874..20708601d0 100644
--- a/go/enclave/rpc/EstimateGas.go
+++ b/go/enclave/rpc/EstimateGas.go
@@ -86,6 +86,11 @@ func EstimateGasExecute(builder *CallBuilder[CallParamsWithBlock, hexutil.Uint64
 	// where BaseFee is bigger than the l1cost.
 	publishingGas = big.NewInt(0).Add(publishingGas, gethcommon.Big1)
 
+	// Overestimate the publishing cost in case of spikes.
+	// Batch execution still deducts normally.
+	// TODO: Change to fixed time period quotes, rather than this.
+	publishingGas = publishingGas.Mul(publishingGas, gethcommon.Big2)
+
 	executionGasEstimate, err := rpc.doEstimateGas(txArgs, blockNumber, rpc.config.GasLocalExecutionCapFlag)
 	if err != nil {
 		err = fmt.Errorf("unable to estimate transaction - %w", err)