# ContractFiles ## Upload file - [POST /v1/contracts/{contractId}/files](https://api-docs.lawvu.com/api/contracts-api/lawvu-contracts.openapi/contractfiles/post-v1-contracts-contractid-files.md): Add or update a file in a contract. \ \ The body of the request must be content-type 'multipart/form-data' and contain the file data. \ \ To update the contract document: Only specify the 'parentFileId' parameter. The 'folderId' and 'conflictResolution' parameters should not be used for these updates