diff --git a/.github/workflows/lint-and-test.yml b/.github/workflows/lint-and-test.yml
index 3921299..1ea274a 100644
--- a/.github/workflows/lint-and-test.yml
+++ b/.github/workflows/lint-and-test.yml
@@ -21,10 +21,11 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
-          - 'pypy-3.8'
+          - '3.12'
           - 'pypy-3.9'
+          - 'pypy-3.10'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2505027..7cf4098 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -21,13 +21,13 @@ repos:
         name: isort
 
   - repo: https://github.com/psf/black
-    rev: 22.12.0
+    rev: 23.9.1
     hooks:
       - id: black
         language_version: python3
 
   - repo: https://github.com/PyCQA/flake8
-    rev: 6.0.0
+    rev: 6.1.0
     hooks:
       - id: flake8
 
@@ -37,14 +37,14 @@ repos:
       - id: mypy
 
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.4
+    rev: 1.7.5
     hooks:
       - id: bandit
         args: ["-c", "pyproject.toml"]
         additional_dependencies: ["bandit[toml]"]
 
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.29.0
+    rev: v1.32.0
     hooks:
       - id: yamllint
         files: \.(yaml|yml)$
diff --git a/CHANGES.rst b/CHANGES.rst
index 16d12a6..1ebe593 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -41,6 +41,7 @@ Deprecated:
 
 Enhancements:
 
+- Added support for Python 3.12.
 - Added type annotations to existing Argh code (#185 → #189).
 - The `dispatch()` function has been refactored, so in case you need finer
   control over the process, two new, more granular functions can be used:
diff --git a/README.rst b/README.rst
index cca9202..1640583 100644
--- a/README.rst
+++ b/README.rst
@@ -105,7 +105,7 @@ A very simple application with one command:
     import argh
 
     def main() -> str:
-        return 'Hello world'
+        return "Hello world"
 
     argh.dispatch_command(main)
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index be34547..f4197a7 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -4,7 +4,7 @@ Dependencies
 ------------
 
 The `argh` library is supported (and tested unless otherwise specified)
-on the following versions of Python: 3.8, 3.9, 3.10, 3.11.
+on the following versions of Python: 3.8, 3.9, 3.10, 3.11, 3.12.
 
 If you need support for ancient Pythons, please use the following versions
 of Argh (the numeric puns were semi-intentional):
diff --git a/pyproject.toml b/pyproject.toml
index eed9214..9c5efc7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,7 @@ classifiers  = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Software Development :: User Interfaces",
@@ -53,9 +54,9 @@ completion = [
   "argcomplete >= 2.0",
 ]
 test = [
-  "tox >= 4.4",
-  "pytest >= 7.2",
-  "pytest-cov >= 4.0",
+  "tox >= 4.11.3",
+  "pytest >= 7.4",
+  "pytest-cov >= 4.1",
 ]
 docs = [
   "sphinx >= 6.1",
@@ -64,7 +65,7 @@ docs = [
   "readthedocs-sphinx-search == 0.2.0",
 ]
 linters = [
-  "pre-commit >= 3.0.4",
+  "pre-commit >= 3.4.0",
 ]
 
 [tool.distutils.bdist_wheel]
@@ -75,7 +76,7 @@ multi_line_output = 3
 profile = "black"
 
 [tool.black]
-target-version = ["py38", "py39", "py310", "py311"]
+target-version = ["py38", "py39", "py310", "py311", "py312"]
 
 [tool.bandit]
 exclude_dirs = ["tests"]
diff --git a/src/argh/dispatching.py b/src/argh/dispatching.py
index 1ad6a03..1a62f22 100644
--- a/src/argh/dispatching.py
+++ b/src/argh/dispatching.py
@@ -303,6 +303,7 @@ def _execute_command(
     All other exceptions propagate unless marked as wrappable
     by :func:`wrap_errors`.
     """
+
     # the function is nested to catch certain exceptions (see below)
     def _call():
         # Actually call the function
@@ -360,7 +361,6 @@ def default_exception_processor(exc: Exception) -> str:
         for line in result:
             yield line
     except tuple(wrappable_exceptions) as exc:
-
         processor = getattr(
             function, ATTR_WRAPPED_EXCEPTIONS_PROCESSOR, default_exception_processor
         )
diff --git a/tests/test_dispatching.py b/tests/test_dispatching.py
index f14ffc0..987b8c8 100644
--- a/tests/test_dispatching.py
+++ b/tests/test_dispatching.py
@@ -121,7 +121,6 @@ def func():
 @patch("argh.dispatching.add_commands")
 @patch("argparse.ArgumentParser")
 def test_entrypoint(ap_cls_mock, add_commands_mock, dispatch_mock):
-
     entrypoint = argh.EntryPoint("my cool app")
 
     # no commands
diff --git a/tox.ini b/tox.ini
index 76b26cb..16a182a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist =
     py39
     py310
     py311
+    py312
     pypy3
     as-module
     lint
@@ -18,7 +19,9 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311,lint,as-module
+    3.12: py312
     pypy-3.9: pypy3
+    pypy-3.10: pypy3
 
 [testenv]
 description = run unit tests
@@ -46,4 +49,4 @@ commands =
 description = verify with linters
 extras = linters
 commands =
-  pre-commit run -a
+    pre-commit run -a