diff --git a/packages/community-cli-plugin/README.md b/packages/community-cli-plugin/README.md
index 423512ee9ceb32..3cf597929eb1e9 100644
--- a/packages/community-cli-plugin/README.md
+++ b/packages/community-cli-plugin/README.md
@@ -85,3 +85,7 @@ Accepts all options supported by [`bundle`](#bundle) and the following:
 | Option | Description |
 | - | - |
 | `--indexed-ram-bundle` | Force the "Indexed RAM" bundle file format, even when building for Android. |
+
+## Contributing
+
+Changes to this package can be made locally and tested against the `rn-tester` app, per the [Contributing guide](https://reactnative.dev/contributing/overview#contributing-code). During development, this package is automatically run from source with no build step.
diff --git a/packages/dev-middleware/README.md b/packages/dev-middleware/README.md
index 68cf4324ca1b07..0d25e4c64e038c 100644
--- a/packages/dev-middleware/README.md
+++ b/packages/dev-middleware/README.md
@@ -80,3 +80,7 @@ WebSocket handler for registering device connections.
 #### `/inspector/debug`
 
 WebSocket handler that proxies CDP messages to/from the corresponding device.
+
+## Contributing
+
+Changes to this package can be made locally and tested against the `rn-tester` app, per the [Contributing guide](https://reactnative.dev/contributing/overview#contributing-code). During development, this package is automatically run from source with no build step.