diff --git a/src/wireviz/wv_bom.py b/src/wireviz/wv_bom.py
index 01fbac3..22eec8d 100644
--- a/src/wireviz/wv_bom.py
+++ b/src/wireviz/wv_bom.py
@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
 
 from collections import namedtuple
-from dataclasses import dataclass
 from enum import Enum, IntEnum
-from typing import List, Optional, Union
+from typing import List, Optional
 
 import tabulate as tabulate_module
 
diff --git a/src/wireviz/wv_dataclasses.py b/src/wireviz/wv_dataclasses.py
index 3081ae4..ef290ed 100644
--- a/src/wireviz/wv_dataclasses.py
+++ b/src/wireviz/wv_dataclasses.py
@@ -8,7 +8,6 @@ from typing import Any, Dict, List, Optional, Tuple, Union
 
 from wireviz.wv_bom import (
     BomHash,
-    BomHashList,
     PartNumberInfo,
     QtyMultiplierCable,
     QtyMultiplierConnector,
diff --git a/src/wireviz/wv_graphviz.py b/src/wireviz/wv_graphviz.py
index a1a2130..8b879ee 100644
--- a/src/wireviz/wv_graphviz.py
+++ b/src/wireviz/wv_graphviz.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
 import re
-from itertools import zip_longest
 from typing import Any, List, Optional, Union
 
 from wireviz import APP_NAME, APP_URL, __version__
@@ -15,8 +14,6 @@ from wireviz.wv_dataclasses import (
     Connector,
     MateComponent,
     MatePin,
-    Options,
-    PartNumberInfo,
     ShieldClass,
     WireClass,
 )
@@ -112,7 +109,9 @@ def gv_additional_component_table(component):
                 [
                     Td(bom_bubble(subitem.bom_id)),
                     Td(f"{subitem.bom_qty}", align="right"),
-                    Td(f"{subitem.qty.unit if subitem.qty.unit else 'x'}", align="left"),
+                    Td(
+                        f"{subitem.qty.unit if subitem.qty.unit else 'x'}", align="left"
+                    ),
                     Td(f"{subitem.description}", align="left"),
                 ]
             )
diff --git a/src/wireviz/wv_harness.py b/src/wireviz/wv_harness.py
index 3fbff3d..ec5fb59 100644
--- a/src/wireviz/wv_harness.py
+++ b/src/wireviz/wv_harness.py
@@ -8,7 +8,7 @@ from typing import List
 from graphviz import Graph
 
 import wireviz.wv_colors
-from wireviz.wv_bom import BomCategory, BomEntry, bom_list, print_bom_table
+from wireviz.wv_bom import BomCategory, bom_list
 from wireviz.wv_dataclasses import (
     AUTOGENERATED_PREFIX,
     AdditionalComponent,
diff --git a/src/wireviz/wv_utils.py b/src/wireviz/wv_utils.py
index 58209e1..3c0fa10 100644
--- a/src/wireviz/wv_utils.py
+++ b/src/wireviz/wv_utils.py
@@ -2,7 +2,7 @@
 
 import re
 from pathlib import Path
-from typing import List, Optional
+from typing import List
 
 awg_equiv_table = {
     "0.09": "28",