diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cec1b99..c6d4217 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,8 +7,10 @@ env:
   # Request colored output from CLI tools supporting it. Different tools
   # interpret the value differently. For some, just being set is sufficient.
   # For others, it must be a non-zero integer. For yet others, being set
-  # to a non-empty value is sufficient.
-  FORCE_COLOR: -106
+  # to a non-empty value is sufficient. For tox, it must be one of
+  # <blank>, 0, 1, false, no, off, on, true, yes. The only enabling value
+  # in common is "1".
+  FORCE_COLOR: 1
   # MyPy's color enforcement (must be a non-zero number)
   MYPY_FORCE_COLOR: -42
   # Recognized by the `py` package, dependency of `pytest` (must be "1")
@@ -40,8 +42,8 @@ jobs:
         - 2.7
         - 3.6
         - "3.7"
-        - "3.10"
         - "3.11"
+        - "3.12"
         # Workaround for actions/setup-python#508
         dev:
         - -dev
@@ -50,9 +52,16 @@ jobs:
         - macos-latest
         - windows-latest
         include:
+        - python: "3.8"
+          platform: ubuntu-latest
+        - python: "3.9"
+          platform: ubuntu-latest
+        - python: "3.10"
+          platform: ubuntu-latest
         - python: pypy3.9
           platform: ubuntu-latest
     runs-on: ${{ matrix.platform }}
+    continue-on-error: ${{ matrix.python == '3.12' }}
     steps:
       - uses: actions/checkout@v3
       - name: Setup Python
diff --git a/docs/conf.py b/docs/conf.py
index fa741a8..c204339 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,6 +1,3 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
 extensions = [
     'sphinx.ext.autodoc',
     'jaraco.packaging.sphinx',
diff --git a/pytest.ini b/pytest.ini
index 80e98cc..2c2817b 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -3,6 +3,9 @@ norecursedirs=dist build .tox .eggs
 addopts=--doctest-modules
 doctest_optionflags=ALLOW_UNICODE ELLIPSIS
 filterwarnings=
+	# Ensure ResourceWarnings are emitted
+	default::ResourceWarning
+
 	# Suppress deprecation warning in flake8
 	ignore:SelectableGroups dict interface is deprecated::flake8
 
diff --git a/setup.cfg b/setup.cfg
index 0577001..ce063b3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -35,7 +35,10 @@ testing =
 	# upstream
 	pytest >= 4.6
 	pytest-checkdocs >= 2.4; python_version >= "3.6"
-	pytest-flake8; python_version >= "3"
+	pytest-flake8; \
+		python_version >= "3"
+		# workaround for tholo/pytest-flake8#87
+		python_version < "3.12" \
 	# workaround for tholo/pytest-flake8#87
 	flake8 < 5
 	# python_implementation: workaround for jaraco/skeleton#22