> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mythic-c2.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Mythic 3.3->3.4 Updates

Updates and needed agent changes between versions

## Breaking Changes

None!

## To Update

Depending on your language, update the associated Mythic Container library:

* github.com/MythicMeta/MythicContainer\@v1.5.0 for Golang
* mythic-container==0.6.0 for Python

## Quality of Life

* Tabs in the active callbacks page that you aren't currently looking at will get a green notification bubble if they have changes
* All services (payload type, c2 profile, translation container, eventing, auth, webhooks, logging, etc) can how report back their own semver for easier version tracking
* The payload building process in the UI had a complete overhaul!

### Payload Types

* Build Parameters are now dynamic and can be hidden depending on the selected OS or other build parameter values.
* Build Parameters can now specify a "group name" to be grouped together logically in the UI.
* A new field, C2 Parameter Deviations, allows Payload Types to "modify" supported C2 Profile parameters to more closely align with their implementations
* Payload Type definitions can now implement their own "help" function so you don't have to use Mythic's built-in help
  * you don't need to create a "command" for it, it's a new function that's available as part of your payload definition
* Payload types can specify if they support multiple c2 selections in a payload or not (ex: http and tcp)
* Payload types can specify if they support multiple instances of c2s in a payload or not (ex: 2 instances of httpx)

### Eventing

* New GUI Wizard button available on the main eventing page in the top left
* Eventing step details auto hide stdout/stderr if they're empty
* Some eventing triggers that allow you to limit by payload\_type now also allow you to further limit by selected OS
* you can now trigger eventing workflows from right clicking a callback in the active callbacks page

### C2 Profiles

* C2 profiles can now report their own agent icons (and dark mode agent icons) to be shown in the UI and in graphs!

### Invite Links

Invite Links are now associated with a database table, so they survive reboots!