# Manage charm resources > See also: [Juju | Resource (charm)](https://canonical.com/juju/docs/juju-cli/latest/reference/resource-charm/#charm-resource) When you deploy / update an application from a charm, that automatically deploys / updates any charm resources, using the defaults specified by the charm author. However, you can also specify resources manually (e.g., to try a resource released only to `edge` or to specify a non-Charmhub resource). This document shows you how. ## Specify the resources to be deployed with a charm To specify the resource(s) to be deployed with your charm, in your Terraform plan, in the definition of the resource for the application specify a `resources` block with key-value pairs listing resource names and their revision number. For example: ```terraform resource "juju_application" "application_one" { name = "my-application" model_uuid = juju_model.testmodel.uuid charm { name = "juju-qa-test" channel = "2.0/edge" } resources = { "foo-file" = 4 } } ``` #### TIP About `charm > revision` and `resources`: - If you specify only `charm > revision`: This is equivalent to `juju deploy --revision` or `juju refresh --revision` – that is, the resource revision is automatically the latest. - If you specify only `resources`: This is equivalent to `juju attach-resource` – that is, the resource revision is whatever you’ve specified. **Note:** While `juju refresh --resource` allows you to update a resource even if no update is available for the charm, this is not possible with `terraform juju`. > See more: [`juju_application > resources`](https://documentation.ubuntu.com/terraform-provider-juju/latest/reference/terraform-provider/resources/application.md)