In a large bowl, combine the shredded cabbage and grated carrots.
In a small bowl, whisk together the apple cider vinegar, olive oil, honey, Dijon mustard, and celery seed.
Pour the dressing over the cabbage and carrots. Toss well to coat evenly.
Season with salt and pepper to taste. Note: Wait until you are ready to serve it before adding salt and pepper, as salt can speed up the wilting process.
Serve immediately or chill in the refrigerator for about an hour to allow flavors to meld.