Django admin list change boolean value on click

models.py

class Event(models.Model):
    name = models.CharField(max_length=80, blank=False)
    description = models.TextField(blank=True)
    date = models.DateField(blank=True, null=True)
    locked = models.BooleanField(default=False)

admin.py

class EventAdmin(admin.ModelAdmin):
   list_display = ('name', 'date', 'locked')
   search_fields = ['name']
  ordering = ['date']

admin.site.register(Event, EventAdmin)

Is it possible to change "locked" by clicking on the icons in the admin list ? I've tried to add "list_editable = ['locked']", but then the red/green icons aren't visible.

Thanks for your help :)