Add the following dependency to your **app**'s `pubspec.yaml` along with others you added above in **Prerequisites**:

```yaml
environment:
  sdk: ">=2.18.0 <4.0.0"
  flutter: ">=3.3.0"

dependencies:
  flutter:
    sdk: flutter

  amplify_auth_cognito: ^1.0.0
  amplify_flutter: ^1.0.0
  amplify_storage_s3: ^1.0.0
```