Add the following to your (platform specific ¹) config file

shell-integration-features = ssh-env, ssh-terminfo

Now reload the configuration.

The configuration can be reloaded at runtime by pressing ctrl+shift+, (Linux) or cmd+shift+, (macOS).

Update: (13 April 2026)

Here is another solution, maybe generic, does not involve updating Ghostty’s config file

infocmp -x xterm-ghostty | ssh YOUR-SERVER -- tic -x -

This would work for other unknown terminal type errors as well. Just replace xterm-ghostty with other terminal type which is giving unknown terminal type error.