diff --git a/irrd/updates/handler.py b/irrd/updates/handler.py
index cdf56ffc8..0e2c0d8a2 100644
--- a/irrd/updates/handler.py
+++ b/irrd/updates/handler.py
@@ -1,7 +1,7 @@
 import logging
 import textwrap
 from collections import defaultdict
-from typing import List, Optional, Dict, Any, Union
+from typing import List, Optional, Dict, Union
 
 from ordered_set import OrderedSet
 
@@ -11,7 +11,7 @@
 from irrd.storage.queries import RPSLDatabaseQuery
 from irrd.utils import email
 from .parser import parse_change_requests, ChangeRequest, SuspensionRequest
-from .parser_state import SuspensionRequestType, UpdateRequestStatus, UpdateRequestType
+from .parser_state import UpdateRequestStatus, UpdateRequestType
 from .validators import ReferenceValidator, AuthValidator
 from ..utils.validators import RPSLChangeSubmission, RPSLSuspensionSubmission
 
diff --git a/irrd/updates/tests/test_handler.py b/irrd/updates/tests/test_handler.py
index da3c85d6e..85bb6e2af 100644
--- a/irrd/updates/tests/test_handler.py
+++ b/irrd/updates/tests/test_handler.py
@@ -8,7 +8,6 @@
 from irrd.storage.models import JournalEntryOrigin
 from irrd.utils.rpsl_samples import SAMPLE_MNTNER
 from irrd.utils.test_utils import flatten_mock_calls
-from irrd.updates.parser import parse_change_requests
 from ..handler import ChangeSubmissionHandler
 from ...utils.validators import RPSLChangeSubmission, RPSLSuspensionSubmission
 from ..parser_state import SuspensionRequestType
@@ -200,7 +199,7 @@ def test_parse_valid_new_person_existing_mntner_pgp_key(self, prepare_mocks):
         assert mock_dh.mock_calls[2][0] == 'commit'
         assert mock_dh.mock_calls[3][0] == 'close'
 
-        assert handler.submitter_report_human() == textwrap.dedent(f"""
+        assert handler.submitter_report_human() == textwrap.dedent("""
         > Message-ID: test
         > From: example@example.com
         
@@ -229,7 +228,7 @@ def test_parse_valid_new_person_existing_mntner_pgp_key(self, prepare_mocks):
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         """)
 
-        expected_notification = textwrap.dedent(f"""
+        expected_notification = textwrap.dedent("""
             This is to notify you of changes in the TEST database
             or object authorisation failures.
             
diff --git a/irrd/updates/tests/test_parser.py b/irrd/updates/tests/test_parser.py
index 2723f241d..75d67b045 100644
--- a/irrd/updates/tests/test_parser.py
+++ b/irrd/updates/tests/test_parser.py
@@ -1,5 +1,4 @@
 import itertools
-import passlib.hash
 import textwrap
 from unittest.mock import Mock
 
@@ -16,7 +15,7 @@
     SAMPLE_ROUTE, SAMPLE_ROUTE6
 from irrd.utils.test_utils import flatten_mock_calls
 from irrd.utils.text import splitline_unicodesafe
-from irrd.updates.suspension import reactivate_for_mntner, suspend_for_mntner
+from irrd.updates.suspension import suspend_for_mntner
 from ..parser import parse_change_requests
 from ..parser_state import SuspensionRequestType, UpdateRequestType, UpdateRequestStatus
 from ..validators import ReferenceValidator, AuthValidator, RulesValidator, ValidatorResult
diff --git a/irrd/updates/tests/test_validators.py b/irrd/updates/tests/test_validators.py
index 5d48cfc12..9d5d7e9c6 100644
--- a/irrd/updates/tests/test_validators.py
+++ b/irrd/updates/tests/test_validators.py
@@ -2,7 +2,6 @@
 from unittest.mock import Mock
 
 import pytest
-from pytest import raises
 
 from irrd.conf import AUTH_SET_CREATION_COMMON_KEY
 from irrd.rpsl.rpsl_objects import rpsl_object_from_text