diff --git a/docs/requirements.md b/docs/requirements.md
index a380f65c..3fb46ddb 100644
--- a/docs/requirements.md
+++ b/docs/requirements.md
@@ -9,6 +9,10 @@ MacPorts](http://sourceforge.net/projects/pycam/forums/forum/860183/topic/380009
 Please document your experiences here, if you successfully used PyCAM
 with other operating systems.
 
+**Note for Python 3.12+:** The deprecated `imp` module was removed in Python 3.12.
+If you're running Python 3.12 or newer, make sure you have the latest version of PyCAM
+with the updated plugin system that uses `importlib` instead.
+
 Linux
 -----
 
@@ -41,6 +45,26 @@ Run the following command in a *root* terminal:
 
     yum install python3-gi python3-opengl
 
+### Arch Linux
+
+Run the following command in a terminal:
+
+    sudo pacman -S python-gobject python-opengl gtk3
+
+### Using virtualenv
+
+If you want to run PyCAM in a Python virtualenv, you need to create the virtualenv with
+access to system site packages, since GTK and its Python bindings are typically installed
+at the system level:
+
+    python -m venv --system-site-packages venv
+    source venv/bin/activate
+    pip install -r requirements.txt
+    python pycam/run_gui.py
+
+Without the `--system-site-packages` flag, the virtualenv won't be able to access the
+system-installed `python3-gi` (PyGObject) package, and PyCAM will fail to start.
+
 Windows
 -------
 
diff --git a/pycam/Plugins/__init__.py b/pycam/Plugins/__init__.py
index 17b80b70..1af1faf7 100644
--- a/pycam/Plugins/__init__.py
+++ b/pycam/Plugins/__init__.py
@@ -17,7 +17,7 @@
 along with PyCAM.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-import imp
+import importlib.util
 import inspect
 import os
 import uuid
@@ -268,9 +268,11 @@ def import_plugins(self, directory=None, ignore_names=None):
                     _log.info("Skipping plugin %s (marked as 'ignore')", mod_name)
                     continue
                 try:
-                    mod_file, mod_filename, mod_desc = imp.find_module(mod_name, [directory])
+                    mod_filename = os.path.join(directory, filename)
                     full_mod_name = "pycam.Plugins.%s" % mod_name
-                    mod = imp.load_module(full_mod_name, mod_file, mod_filename, mod_desc)
+                    spec = importlib.util.spec_from_file_location(full_mod_name, mod_filename)
+                    mod = importlib.util.module_from_spec(spec)
+                    spec.loader.exec_module(mod)
                 except ImportError as exc:
                     _log.info("Skipping plugin %s: %s", os.path.join(directory, filename), exc)
                     continue