# Update your existing app to sponsor gas fees for smart account users If you are looking to sponsor gas fees for your users without embedding a wallet in your app, you can use this guide to update your existing app to sponsor gas fees for smart accounts. ## Steps :::steps ### Spin up an ERC-7677 proxy server Follow the deployment guide on the [ERC-7677 Proxy Server](https://github.com/pimlicolabs/erc7677-proxy) repository readme to deploy an ERC-7677 proxy server. ### Update your app to sponsor gas fees Follow Step 3 on the [erc7677.xyz guide](https://www.erc7677.xyz/guides/sponsoring-transactions#3-send-eip-5792-requests-with-a-paymaster-service-capability) to update your app to support ERC-5792 requests and enable the paymaster service capability feature, using the public URL you created for the ERC-7677 proxy in the previous step. :::