diff --git a/.changeset/soft-ads-agree.md b/.changeset/soft-ads-agree.md
new file mode 100644
index 0000000..0354f0b
--- /dev/null
+++ b/.changeset/soft-ads-agree.md
@@ -0,0 +1,5 @@
+---
+'@rosen-chains/evm-rpc': patch
+---
+
+Fix EVM gas estimation so that only required fields are sent to the RPC
diff --git a/packages/networks/evm-rpc/lib/EvmRpcNetwork.ts b/packages/networks/evm-rpc/lib/EvmRpcNetwork.ts
index 3347141..fb5e467 100644
--- a/packages/networks/evm-rpc/lib/EvmRpcNetwork.ts
+++ b/packages/networks/evm-rpc/lib/EvmRpcNetwork.ts
@@ -300,8 +300,9 @@ class EvmRpcNetwork extends AbstractEvmNetwork {
   getGasRequired = async (transaction: Transaction): Promise<bigint> => {
     try {
       const gas = await this.provider.estimateGas({
-        ...transaction.toJSON(),
         from: this.lockAddress,
+        to: transaction.to,
+        data: transaction.data,
       });
       this.logger.debug(
         `requested 'estimateGas' of ${