diff --git a/src/pynwb/tests/test_hed_tags.py b/src/pynwb/tests/test_hed_tags.py
index bf8f5b4..d6f5b7a 100644
--- a/src/pynwb/tests/test_hed_tags.py
+++ b/src/pynwb/tests/test_hed_tags.py
@@ -1,11 +1,7 @@
 """Unit and integration tests for ndx-hed."""
-from datetime import datetime
-from dateutil.tz import tzlocal
-from hdmf.common import VectorIndex
 from pynwb import NWBHDF5IO  # , NWBFile
 from pynwb.testing.mock.file import mock_NWBFile
 from pynwb.testing import TestCase, remove_test_file  # , NWBH5IOFlexMixin
-from uuid import uuid4
 
 from ndx_hed import HedAnnotations, HedMetadata