diff --git a/shelfmark/core/image_cache.py b/shelfmark/core/image_cache.py
index 21ea7317..77af1a66 100644
--- a/shelfmark/core/image_cache.py
+++ b/shelfmark/core/image_cache.py
@@ -1,7 +1,6 @@
 """Disk-based image cache with LRU eviction."""
 
 import hashlib
-import ipaddress
 import json
 import threading
 import time
diff --git a/shelfmark/core/notifications.py b/shelfmark/core/notifications.py
index f7f7a6f8..88d6e525 100644
--- a/shelfmark/core/notifications.py
+++ b/shelfmark/core/notifications.py
@@ -5,7 +5,6 @@ from __future__ import annotations
 import ipaddress
 import logging
 import socket
-import threading
 from concurrent.futures import ThreadPoolExecutor
 from contextlib import contextmanager, suppress
 from contextvars import ContextVar
diff --git a/shelfmark/download/orchestrator.py b/shelfmark/download/orchestrator.py
index 48fc69b6..c0964f89 100644
--- a/shelfmark/download/orchestrator.py
+++ b/shelfmark/download/orchestrator.py
@@ -9,7 +9,6 @@ import random
 import threading
 import time
 from concurrent.futures import Future, ThreadPoolExecutor
-from email.utils import parseaddr
 from functools import partial
 from pathlib import Path
 from threading import Event, Lock