diff --git a/taggit/management/commands/deduplicate_tags.py b/taggit/management/commands/deduplicate_tags.py
index 2f1f512a..a745634b 100644
--- a/taggit/management/commands/deduplicate_tags.py
+++ b/taggit/management/commands/deduplicate_tags.py
@@ -1,5 +1,3 @@
-from collections import defaultdict
-
 from django.conf import settings
 from django.core.management.base import BaseCommand
 from django.db import transaction