diff --git a/README.md b/README.md
index 732c7491f..af9ca0b99 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,9 @@ yarn install
 yarn build:ui:desktop
 ```
 
+To provide a signing identify for macOS build, use `BOUNDARY_DESKTOP_SIGNING_IDENTITY`
+environment variable to set signing certificate name (e.g Developer ID Application: * (*)).
+
 Assets are saved to `ui/desktop/electron-app/out/make/`.
 DMG packaged desktop UI is available at asset location as `Boundary Desktop.dmg`.
 
diff --git a/ui/desktop/README.md b/ui/desktop/README.md
index 45415803a..bd8215112 100644
--- a/ui/desktop/README.md
+++ b/ui/desktop/README.md
@@ -66,15 +66,17 @@ To run as a desktop app:
 
 Before executing a build, be sure to set any environment variables necessary
 for your target [environment](#environment-variables).  To build this UI for
-production, run the following commads from this folder:
+production, run the following commands from this folder:
 
 ```bash
 yarn install
 yarn build
 ```
 
-The static production assets are saved into the `dist/` folder.
+`BOUNDARY_DESKTOP_SIGNING_IDENTITY` environment variable must be provided
+to codesign in production.
 
+The static production assets are saved into the `dist/` folder.
 
 #### Environment Variables
 
@@ -83,7 +85,7 @@ These environment variables may be used to customized the build.
 | Variable | Default Value | Description |
 | -------- | ------------- | ----------- |
 | `APP_NAME` | Application Name | The user-facing name of the application, appearing in titles, etc. |
-| `API_HOST` | | The host of the API, if different than UI (e.g. https://example.net:1234). |
+| `BOUNDARY_DESKTOP_SIGNING_IDENTITY` | | The name of the certificate to use when signing (e.g. Developer ID Application: * (*)). |
 
 ### Running Tests