GIN on ArrayField(CITextField)

stacktrace

$ ./manage.py migrate ginapp
Operations to perform:
  Apply all migrations: ginapp
Running migrations:
  Applying ginapp.0001_initial...Traceback (most recent call last):
  File "./manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/vad/Source/django/django/core/management/__init__.py", line 357, in execute_from_command_line
    utility.execute()
  File "/home/vad/Source/django/django/core/management/__init__.py", line 349, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/vad/Source/django/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/vad/Source/django/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/vad/Source/django/django/core/management/commands/migrate.py", line 204, in handle
    fake_initial=fake_initial,
  File "/home/vad/Source/django/django/db/migrations/executor.py", line 115, in migrate
    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/home/vad/Source/django/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/home/vad/Source/django/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/vad/Source/django/django/db/migrations/migration.py", line 129, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/vad/Source/django/django/db/migrations/operations/models.py", line 789, in database_forwards
    schema_editor.add_index(model, self.index)
  File "/home/vad/Source/django/django/db/backends/base/schema.py", line 322, in add_index
    self.execute(index.create_sql(model, self))
  File "/home/vad/Source/django/django/db/backends/base/schema.py", line 111, in execute
    cursor.execute(sql, params)
  File "/home/vad/Source/django/django/db/backends/utils.py", line 79, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/vad/Source/django/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/vad/Source/django/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/vad/Source/django/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: data type citext[] has no default operator class for access method "gin"
HINT:  You must specify an operator class for the index or define a default operator class for the data type.

Hi :) How you have solved this problem?