# `Minga.Events.ExtensionRestartRequiredEvent`
[🔗](https://github.com/jsmestad/minga/blob/main/lib/minga/events.ex#L222)

Payload for staged extension code that cannot replace the current VM generation.

# `t`

```elixir
@type t() :: %Minga.Events.ExtensionRestartRequiredEvent{
  extension: atom(),
  new_ref: String.t() | nil,
  old_ref: String.t() | nil,
  reason: :source_changed | :updated | :installed
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*