diff --git a/packages/evm/contracts/adapters/DendrETH/DendrETHAdapter.sol b/packages/evm/contracts/adapters/DendrETH/DendrETHAdapter.sol
index 5a44c80a..ca687b44 100644
--- a/packages/evm/contracts/adapters/DendrETH/DendrETHAdapter.sol
+++ b/packages/evm/contracts/adapters/DendrETH/DendrETHAdapter.sol
@@ -82,6 +82,8 @@ contract DendrETHAdapter is BlockHashAdapter {
     ) external {
         ILightClient lightClient = ILightClient(DENDRETH);
 
+        lightClient.light_client_update(update);
+
         bytes32 finalizedHeaderRoot = lightClient.finalizedHeaderRoot();
 
         if (!SSZ.verifySlot(_slot, _slotProof, finalizedHeaderRoot)) {
@@ -96,8 +98,6 @@ contract DendrETHAdapter is BlockHashAdapter {
             revert InvalidBlockHashProof();
         }
 
-        lightClient.light_client_update(update);
-
         _storeHash(SOURCE_CHAIN_ID, _blockNumber, _blockHash);
     }
 }
diff --git a/packages/evm/tasks/deploy/dendreth.ts b/packages/evm/tasks/deploy/dendreth.ts
index 9cd32cef..de9114f5 100644
--- a/packages/evm/tasks/deploy/dendreth.ts
+++ b/packages/evm/tasks/deploy/dendreth.ts
@@ -6,12 +6,13 @@ import { verify } from "."
 
 task("deploy:DendrETH")
   .addParam("lightclient", "address of the the light client contract", undefined, types.string)
+  .addParam("sourcechainid", "source chain ID", undefined, types.int)
   .addFlag("verify", "whether to verify the contract on Etherscan")
   .setAction(async function (taskArguments: TaskArguments, hre) {
     console.log("Deploying DendrETH adapter...")
     const signers: SignerWithAddress[] = await hre.ethers.getSigners()
     const DendrETHAdapter = await hre.ethers.getContractFactory("DendrETHAdapter")
-    const constructorArguments = [taskArguments.lightclient] as const
+    const constructorArguments = [taskArguments.sourcechainid, taskArguments.lightclient] as const
     const dendrethAdapter = await DendrETHAdapter.connect(signers[0]).deploy(...constructorArguments)
     await dendrethAdapter.deployed()
     console.log("DendrETH adapter deployed to:", dendrethAdapter.address)