diff --git a/dronecan_gui_tool/main.py b/dronecan_gui_tool/main.py
index 611ffc2..433594e 100644
--- a/dronecan_gui_tool/main.py
+++ b/dronecan_gui_tool/main.py
@@ -60,7 +60,7 @@
 # Start method must be configured globally, and only once. Using 'spawn' ensures full compatibility with Windoze.
 # We need to check first if the start mode is already configured, because this code will be re-run for every child.
 #
-if multiprocessing.get_start_method(True) != 'spawn':
+if multiprocessing.get_start_method(allow_none=True) is None:
     multiprocessing.set_start_method('spawn')
 
 #
diff --git a/dronecan_gui_tool/widgets/__init__.py b/dronecan_gui_tool/widgets/__init__.py
index d93bcd9..ee2b61b 100644
--- a/dronecan_gui_tool/widgets/__init__.py
+++ b/dronecan_gui_tool/widgets/__init__.py
@@ -8,7 +8,7 @@
 
 import os
 import re
-import pkg_resources
+import importlib.resources
 import queue
 from PyQt5.QtWidgets import QTableWidget, QTableWidgetItem, QAbstractItemView, QHeaderView, QApplication, QWidget, \
     QComboBox, QCompleter, QPushButton, QHBoxLayout, QVBoxLayout, QMessageBox
@@ -640,8 +640,9 @@ def get_app_icon():
         pass
     # noinspection PyBroadException
     try:
-        fn = pkg_resources.resource_filename('dronecan_gui_tool', os.path.join('icons', 'dronecan_gui_tool.png'))
-        _APP_ICON_OBJECT = QIcon(fn)
+        icon_resource = importlib.resources.files('dronecan_gui_tool').joinpath('icons', 'dronecan_gui_tool.png')
+        with importlib.resources.as_file(icon_resource) as icon_path:
+            _APP_ICON_OBJECT = QIcon(str(icon_path))
     except Exception:
         logger.error('Could not load icon', exc_info=True)
         _APP_ICON_OBJECT = QIcon()
diff --git a/pip_sizes.py b/pip_sizes.py
index e0b5226..8f80347 100644
--- a/pip_sizes.py
+++ b/pip_sizes.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 import os
-import pkg_resources
+import importlib.metadata
 
 def calc_container(path):
     total_size = 0
@@ -13,7 +13,7 @@ def calc_container(path):
 
 
 
-dists = [d for d in pkg_resources.working_set]
+dists = list(importlib.metadata.distributions())
 
 data = {}
 data2 = []
@@ -21,16 +21,18 @@ def calc_container(path):
 
 for dist in dists:
     try:
-        path = os.path.join(dist.location, dist.project_name)
+        dist_name = dist.metadata.get('Name', 'unknown')
+        path = os.path.join(str(dist.locate_file('')), dist_name)
+        if not os.path.exists(path):
+            path = os.path.join(str(dist.locate_file('')), dist_name.replace('-', '_'))
         size = calc_container(path)
         if size/1000 > 1.0:
-            #print (f"{dist}: {size/1000} KB")
-            data[size] = f"{dist}: {size/1000} KB"
-            a = f"{dist}"
-            data2.append(a.split()[0])# first word
-            data3[a.split()[0]] = f"{dist}: {size/1000} KB"
+            dist_label = f"{dist_name} {dist.metadata.get('Version', '')}"
+            data[size] = f"{dist_label}: {size/1000} KB"
+            data2.append(dist_name)
+            data3[dist_name] = f"{dist_label}: {size/1000} KB"
     except OSError:
-        '{} no longer exists'.format(dist.project_name)
+        pass
 
 sorted_dict = dict(sorted(data.items()))
 sorted_dict2 = sorted(data2)
diff --git a/setup.py b/setup.py
index dea9620..1a74f92 100755
--- a/setup.py
+++ b/setup.py
@@ -10,10 +10,8 @@
 import os
 import sys
 import shutil
-import pkg_resources
 import glob
 from setuptools import setup, find_packages
-from setuptools.archive_util import unpack_archive
 
 PACKAGE_NAME = 'dronecan_gui_tool'
 HUMAN_FRIENDLY_NAME = 'DroneCAN GUI Tool'
@@ -115,6 +113,8 @@
 
 if ('bdist_msi' in sys.argv) or ('build_exe' in sys.argv):
     import cx_Freeze
+    import importlib.metadata
+    from setuptools.archive_util import unpack_archive
 
     # cx_Freeze can't handle 3rd-party packages packed in .egg files, so we have to extract them for it
     dependency_eggs_to_unpack = [
@@ -130,9 +130,13 @@
     except Exception:
         pass
     for dep in dependency_eggs_to_unpack:
-        for egg in pkg_resources.require(dep):
-            if not os.path.isdir(egg.location):
-                unpack_archive(egg.location, unpacked_eggs_dir)
+        try:
+            dist = importlib.metadata.distribution(dep)
+        except importlib.metadata.PackageNotFoundError:
+            continue
+        dist_location = str(dist.locate_file(''))
+        if not os.path.isdir(dist_location):
+            unpack_archive(dist_location, unpacked_eggs_dir)
 
     import qtawesome
     import qtconsole
@@ -153,7 +157,7 @@
     args['options'] = {
         'build_exe': {
             'packages': [
-                'pkg_resources',
+                'importlib.metadata',
                 'zmq',
                 'pygments',
                 'jupyter_client',