Changing GPG key fails

I've renewed expiration on my GPG key today and I went to update it on mentors.

Replacing the block with the updated key crashed debexpo. Removing the key, then re-adding it worked.

Log:

Internal Server Error: /accounts/profile/
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
psycopg2.IntegrityError: duplicate key value violates unique constraint "keyring_key_user_id_key"
DETAIL:  Key (user_id)=(12437) already exists.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python3/dist-packages/django/contrib/auth/decorators.py", line 21, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/var/www/debexpo/debexpo/../debexpo/accounts/views.py", line 196, in profile
    _update_key(request, gpg_form)
  File "/var/www/debexpo/debexpo/../debexpo/accounts/views.py", line 108, in _update_key
    key.save()
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 741, in save
    force_update=force_update, update_fields=update_fields)
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 779, in save_base
    force_update, using, update_fields,
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 870, in _save_table
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 908, in _do_insert
    using=using, raw=raw)
  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 1186, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "/usr/lib/python3/dist-packages/django/db/models/sql/compiler.py", line 1375, in execute_sql
    cursor.execute(sql, params)
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 67, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
  File "/usr/lib/python3/dist-packages/django/db/utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.IntegrityError: duplicate key value violates unique constraint "keyring_key_user_id_key"
DETAIL:  Key (user_id)=(12437) already exists.