To check for package versions beyond your current dependency rules in SPM:

1. Use this terminal command in your project directory:

```bash

swift package describe --type json | jq '.dependencies[].requirement'

```

2. For a specific package (e.g., Firebase), check its GitHub releases page or use:

```bash

swift package show-dependencies --format json | jq '.dependencies[] | select(.name=="Firebase")'

```

3. Alternatively, temporarily change your dependency to `.exact("1.0.0")` in Package.swift, then run `swift package update` to see available versions