* A PT may be superseded by another. For example, obfs4 superseded scramblesuit.
* A PT may be superseded by another. For example, obfs4 superseded scramblesuit.
* The maintainer of a PT may no longer be available. This was the case for FTE.
* The maintainer of a PT may no longer be available. This was the case for FTE.
* Eventually we should have a process to make this decision.
* Eventually we should have a process to make this decision.
== The retiring process ==
## The retiring process
1. Inform the community by sending an email to tor-talk@. Also inform the relay operator community by sending an email to tor-relays@. This will give operators a chance to shut down retired transports.
1. Inform the community by sending an email to tor-talk@. Also inform the relay operator community by sending an email to tor-relays@. This will give operators a chance to shut down retired transports.
2. Update Tor Browser. Also don't forget to update the list of default bridges.
2. Update Tor Browser. Also don't forget to update the list of default bridges.
3. Update BridgeDB after Tor Browser.
3. Update BridgeDB after Tor Browser.
4. Update our documentation.
4. Update our documentation.
== Where and how to retire pluggable transports ==